#281F88#281F88

#281F88 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.165 H 276.5°. Best body text is #FFFFFF at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#281F88
RGB	rgb(40, 31, 136)
HSL	hsl(245, 63%, 33%)
HSV	hsv(245, 77%, 53%)
CMYK	cmyk(70.6%, 77.2%, 0%, 46.7%)
CIE-LAB	lab(20.86, 38.06, -56.59)
CIE-LCH	lch(20.86, 68.20, 303.92°)
OKLab	oklab(33.43% 0.0187 -0.1635)
OKLCH	oklch(33.43% 0.165 276.5)
XYZ	xyz(5.8075, 3.2081, 23.6010)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F88 #7F881F

analogous

#1F4A88 #281F88 #5C1F88

triadic

#281F88 #88281F #1F8828

tetradic

#281F88 #881F4A #7F881F #1F885C

square

#281F88 #881F4A #7F881F #1F885C

split-complementary

#281F88 #885C1F #4A881F

monochromatic

#0B0824 #191456 #281F88 #372ABA #574BD6

Accessibility & contrast

On white

12.79

#281F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#281F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F88

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F88	#FFFFFF	#000000	##FFFFFF
##281F88	1.00	12.79	1.64	12.79
#FFFFFF	12.79	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378B

Deuteranopia (green-blind)

#002E86

Tritanopia (blue-blind)

#003E52

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281f88;
/* rgb */ color: rgb(40, 31, 136);
/* oklch */ color: oklch(33.4% 0.165 276.5);

Tailwind

colors: {
  custom: {
    50: '#715dac',
    500: '#281f88',
    950: '#000000',
  },
}

SCSS

$custom: #281f88;
$custom-light: #715dac;
$custom-dark: #000000;

JSON

{
  "hex": "#281f88",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 136
  },
  "hsl": {
    "h": 245.143,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33428,
    "c": 0.16461,
    "h": 276.5
  },
  "luminance": 0.03209
}

Semantic roles & 50–950 ramp

primary

#281F88

secondary

#AFB94A

accent

#E642D8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281F88

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

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