What are the hex codes in the Bright Celadon & Blue Gray palette?

The Bright Celadon & Blue Gray color palette consists of Charcoal #3F3E57, Blue Gray #4F90C2, Frost #E9F5F2, Celadon #92DE9E.

How should I use the Bright Celadon & Blue Gray palette on a website?

Use Frost #E9F5F2 as the background, Charcoal #3F3E57 for text, Celadon #92DE9E for buttons and links, and Blue Gray #4F90C2 for accents. 2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Charcoal on Frost at 9.23:1.

Which colors in Bright Celadon & Blue Gray have enough contrast for text?

The highest-contrast pair is #3F3E57 on #E9F5F2 with a ratio of 9.23:1, which passes WCAG AA for normal text.

#3F3E57Charcoal

#4F90C2Blue Gray

#E9F5F2Frost

#92DE9ECeladon

Bright Celadon & Blue Gray color palette

Modern Blue White Green

Color codes click any value to copy

Name	HEX	RGB	HSL	OKLCH
Charcoal	`#3F3E57`	`rgb(63, 62, 87)`	`hsl(242, 17%, 29%)`	`oklch(37.6% 0.042 286)`
Blue Gray	`#4F90C2`	`rgb(79, 144, 194)`	`hsl(206, 49%, 54%)`	`oklch(63.1% 0.101 244)`
Frost	`#E9F5F2`	`rgb(233, 245, 242)`	`hsl(165, 38%, 94%)`	`oklch(96.0% 0.013 179)`
Celadon	`#92DE9E`	`rgb(146, 222, 158)`	`hsl(129, 54%, 72%)`	`oklch(83.4% 0.117 148)`

Why it works and how to use it

Bright Celadon & Blue Gray is a split color palette tagged modern, blue, white. The hues span about 77°, enough contrast to create a focal point without the harshness of true complements. Neither washed out nor loud, it adapts to most contexts. The overall temperature is cool.

It works because the lightness range is wide (29% to 94%), which gives clear hierarchy between background, content and accents. Try it for websites, presentations and branding.

Background: Frost (#E9F5F2) is the lightest color, so it belongs on large surfaces.
Text: Charcoal (#3F3E57) on #E9F5F2 gives 9.23:1, passing WCAG AAA.
Primary: Celadon (#92DE9E) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
Accent: Blue Gray (#4F90C2) for highlights, badges and hover states.

2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Charcoal on Frost at 9.23:1.

Preview on a real UI see how the palette feels in context

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Design faster with Bright Celadon & Blue Gray

A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.

Primary action Secondary

Card title

Roles are assigned by lightness.

Color blindness simulation

#3F3E57

#4F90C2

#E9F5F2

#92DE9E

Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.

Palette card

Contrast check WCAG ratios between palette colors

Pair	Sample	Ratio	Level
`#3F3E57` on `#E9F5F2`	Aa	9.23:1	AAA
`#3F3E57` on `#92DE9E`	Aa	6.46:1	AA
`#4F90C2` on `#E9F5F2`	Aa	3.08:1	AA large only
`#3F3E57` on `#4F90C2`	Aa	2.99:1	Fail
`#4F90C2` on `#92DE9E`	Aa	2.16:1	Fail
`#E9F5F2` on `#92DE9E`	Aa	1.43:1	Fail

:root {
  --charcoal: #3F3E57;
  --blue-gray: #4F90C2;
  --frost: #E9F5F2;
  --celadon: #92DE9E;
}

$charcoal: #3F3E57;
$blue-gray: #4F90C2;
$frost: #E9F5F2;
$celadon: #92DE9E;

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'charcoal': '#3F3E57',
        'blue-gray': '#4F90C2',
        'frost': '#E9F5F2',
        'celadon': '#92DE9E',
      },
    },
  },
};

{
  "name": "Bright Celadon & Blue Gray",
  "colors": [
    "#3F3E57",
    "#4F90C2",
    "#E9F5F2",
    "#92DE9E"
  ]
}

background: linear-gradient(135deg, #3F3E57, #4F90C2, #E9F5F2, #92DE9E);

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Added 2026-07-28 · Free for commercial use, no attribution needed.

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