#284B66#284B66

#284B66 is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 39.9% C 0.061 H 243.5°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#284B66
RGB	rgb(40, 75, 102)
HSL	hsl(206, 44%, 28%)
HSV	hsv(206, 61%, 40%)
CMYK	cmyk(60.8%, 26.5%, 0%, 60%)
CIE-LAB	lab(30.50, -3.72, -19.57)
CIE-LCH	lch(30.50, 19.92, 259.24°)
OKLab	oklab(39.91% -0.0274 -0.0548)
OKLCH	oklch(39.91% 0.061 243.5)
XYZ	xyz(5.7885, 6.4421, 13.5062)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284B66 #664328

analogous

#286662 #284B66 #282C66

triadic

#284B66 #66284B #4B6628

tetradic

#284B66 #622866 #664328 #2C6628

square

#284B66 #622866 #664328 #2C6628

split-complementary

#284B66 #66282C #666228

monochromatic

#091016 #172B3A #284B66 #396B92 #4F8BBA

Accessibility & contrast

On white

9.18

#284B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#284B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284B66

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284B66	#FFFFFF	#000000	##FFFFFF
##284B66	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F4B67

Deuteranopia (green-blind)

#374566

Tritanopia (blue-blind)

#005254

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #284b66;
/* rgb */ color: rgb(40, 75, 102);
/* oklch */ color: oklch(39.9% 0.061 243.5);

Tailwind

colors: {
  custom: {
    50: '#687d91',
    500: '#284b66',
    950: '#000000',
  },
}

SCSS

$custom: #284b66;
$custom-light: #687d91;
$custom-dark: #000000;

JSON

{
  "hex": "#284b66",
  "rgb": {
    "r": 40,
    "g": 75,
    "b": 102
  },
  "hsl": {
    "h": 206.129,
    "s": 43.662,
    "l": 27.843
  },
  "oklch": {
    "l": 0.39907,
    "c": 0.06131,
    "h": 243.5
  },
  "luminance": 0.06443
}

Semantic roles & 50–950 ramp

primary

#284B66

secondary

#997051

accent

#8C54D3

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#06090D

muted

#7A7B7D

Preview Lab

Preview with #284B66

Body copy rendered with the generated semantic roles for this colour.

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