#281B72#281B72

#281B72 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.140 H 280.9°. Best body text is #FFFFFF at 14.09:1 contrast (WCAG AA passes).

Color values

HEX	#281B72
RGB	rgb(40, 27, 114)
HSL	hsl(249, 62%, 28%)
HSV	hsv(249, 76%, 45%)
CMYK	cmyk(64.9%, 76.3%, 0%, 55.3%)
CIE-LAB	lab(17.69, 33.00, -47.81)
CIE-LCH	lch(17.69, 58.09, 304.61°)
OKLab	oklab(30.48% 0.0265 -0.1379)
OKLCH	oklch(30.48% 0.14 280.9)
XYZ	xyz(4.3033, 2.4496, 16.1624)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B72 #65721B

analogous

#1B3972 #281B72 #541B72

triadic

#281B72 #72281B #1B7228

tetradic

#281B72 #721B39 #65721B #1B7254

square

#281B72 #721B39 #65721B #1B7254

split-complementary

#281B72 #72541B #39721B

monochromatic

#090619 #170F41 #281B72 #3927A3 #4E38D0

Accessibility & contrast

On white

14.09

#281B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#281B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B72

14.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B72	#FFFFFF	#000000	##FFFFFF
##281B72	1.00	14.09	1.49	14.09
#FFFFFF	14.09	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E75

Deuteranopia (green-blind)

#002870

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #281b72;
/* rgb */ color: rgb(40, 27, 114);
/* oklch */ color: oklch(30.5% 0.140 280.9);

Tailwind

colors: {
  custom: {
    50: '#6c599b',
    500: '#281b72',
    950: '#000000',
  },
}

SCSS

$custom: #281b72;
$custom-light: #6c599b;
$custom-dark: #000000;

JSON

{
  "hex": "#281b72",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 114
  },
  "hsl": {
    "h": 248.966,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.30481,
    "c": 0.14042,
    "h": 280.9
  },
  "luminance": 0.0245
}

Semantic roles & 50–950 ramp

primary

#281B72

secondary

#98A742

accent

#E543CD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08030E

muted

#7A787E

Preview Lab

Preview with #281B72

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

Preview Lab → · Contrast checker → · Palette generator →