#281F81#281F81

#281F81 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.156 H 277.5°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#281F81
RGB	rgb(40, 31, 129)
HSL	hsl(246, 61%, 31%)
HSV	hsv(246, 76%, 51%)
CMYK	cmyk(69%, 76%, 0%, 49.4%)
CIE-LAB	lab(20.11, 35.71, -53.42)
CIE-LCH	lch(20.11, 64.26, 303.76°)
OKLab	oklab(32.67% 0.0203 -0.1543)
OKLCH	oklch(32.67% 0.156 277.5)
XYZ	xyz(5.3262, 3.0156, 21.0660)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F81 #78811F

analogous

#1F4781 #281F81 #591F81

triadic

#281F81 #81281F #1F8128

tetradic

#281F81 #811F47 #78811F #1F8159

square

#281F81 #811F47 #78811F #1F8159

split-complementary

#281F81 #81591F #47811F

monochromatic

#09071E #191350 #281F81 #372BB2 #5447D3

Accessibility & contrast

On white

13.10

#281F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#281F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F81

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F81	#FFFFFF	#000000	##FFFFFF
##281F81	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003584

Deuteranopia (green-blind)

#002C7F

Tritanopia (blue-blind)

#003B4E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281f81;
/* rgb */ color: rgb(40, 31, 129);
/* oklch */ color: oklch(32.7% 0.156 277.5);

Tailwind

colors: {
  custom: {
    50: '#6f5ca7',
    500: '#281f81',
    950: '#000000',
  },
}

SCSS

$custom: #281f81;
$custom-light: #6f5ca7;
$custom-dark: #000000;

JSON

{
  "hex": "#281f81",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 129
  },
  "hsl": {
    "h": 245.51,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3267,
    "c": 0.15564,
    "h": 277.5
  },
  "luminance": 0.03016
}

Semantic roles & 50–950 ramp

primary

#281F81

secondary

#AAB448

accent

#E443D6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #281F81

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

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