#102857#102857

#102857 is a dark, moderate blue. Relative luminance 0.023; OKLCH L 28.8% C 0.090 H 262.1°. Best body text is #FFFFFF at 14.35:1 contrast (WCAG AA passes).

Color values

HEX	#102857
RGB	rgb(16, 40, 87)
HSL	hsl(220, 69%, 20%)
HSV	hsv(220, 82%, 34%)
CMYK	cmyk(81.6%, 54%, 0%, 65.9%)
CIE-LAB	lab(17.06, 9.90, -31.14)
CIE-LCH	lch(17.06, 32.67, 287.64°)
OKLab	oklab(28.84% -0.0125 -0.0895)
OKLCH	oklch(28.84% 0.09 262.1)
XYZ	xyz(2.6922, 2.3156, 9.3200)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#102857 #573F10

analogous

#104C57 #102857 #1B1057

triadic

#102857 #571028 #285710

tetradic

#102857 #57104C #573F10 #10571B

square

#102857 #57104C #573F10 #10571B

split-complementary

#102857 #571B10 #4C5710

monochromatic

#050C1A #061023 #102857 #1A408B #2358BE

Accessibility & contrast

On white

14.35

#102857 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#102857 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #102857

14.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##102857	#FFFFFF	#000000	##FFFFFF
##102857	1.00	14.35	1.46	14.35
#FFFFFF	14.35	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C2D59

Deuteranopia (green-blind)

#002756

Tritanopia (blue-blind)

#00333B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #102857;
/* rgb */ color: rgb(16, 40, 87);
/* oklch */ color: oklch(28.8% 0.090 262.1);

Tailwind

colors: {
  custom: {
    50: '#5a6187',
    500: '#102857',
    950: '#000000',
  },
}

SCSS

$custom: #102857;
$custom-light: #5a6187;
$custom-dark: #000000;

JSON

{
  "hex": "#102857",
  "rgb": {
    "r": 16,
    "g": 40,
    "b": 87
  },
  "hsl": {
    "h": 219.718,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.28837,
    "c": 0.09039,
    "h": 262.1
  },
  "luminance": 0.02316
}

Semantic roles & 50–950 ramp

primary

#102857

secondary

#907132

accent

#B03CEC

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #102857

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

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