#281F72#281F72

#281F72 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.136 H 279.9°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#281F72
RGB	rgb(40, 31, 114)
HSL	hsl(247, 57%, 28%)
HSV	hsv(247, 73%, 45%)
CMYK	cmyk(64.9%, 72.8%, 0%, 55.3%)
CIE-LAB	lab(18.57, 30.56, -46.37)
CIE-LCH	lch(18.57, 55.54, 303.39°)
OKLab	oklab(31.11% 0.0233 -0.1337)
OKLCH	oklch(31.11% 0.136 279.9)
XYZ	xyz(4.4014, 2.6457, 16.1951)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F72 #69721F

analogous

#1F3F72 #281F72 #511F72

triadic

#281F72 #72281F #1F7228

tetradic

#281F72 #721F3F #69721F #1F7251

square

#281F72 #721F3F #69721F #1F7251

split-complementary

#281F72 #72511F #3F721F

monochromatic

#080718 #171242 #281F72 #392CA2 #4F40CB

Accessibility & contrast

On white

13.73

#281F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F72

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F72	#FFFFFF	#000000	##FFFFFF
##281F72	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003075

Deuteranopia (green-blind)

#002A70

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281f72;
/* rgb */ color: rgb(40, 31, 114);
/* oklch */ color: oklch(31.1% 0.136 279.9);

Tailwind

colors: {
  custom: {
    50: '#6c5c9b',
    500: '#281f72',
    950: '#000000',
  },
}

SCSS

$custom: #281f72;
$custom-light: #6c5c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#281f72",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 114
  },
  "hsl": {
    "h": 246.506,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31105,
    "c": 0.13572,
    "h": 279.9
  },
  "luminance": 0.02646
}

Semantic roles & 50–950 ramp

primary

#281F72

secondary

#9CA647

accent

#E047D0

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281F72

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

Preview Lab → · Contrast checker → · Palette generator →