#281B6A#281B6A

#281B6A is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.130 H 282.6°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#281B6A
RGB	rgb(40, 27, 106)
HSL	hsl(250, 59%, 26%)
HSV	hsv(250, 75%, 42%)
CMYK	cmyk(62.3%, 74.5%, 0%, 58.4%)
CIE-LAB	lab(16.87, 30.30, -43.95)
CIE-LCH	lch(16.87, 53.38, 304.58°)
OKLab	oklab(29.65% 0.0283 -0.1266)
OKLCH	oklch(29.65% 0.13 282.6)
XYZ	xyz(3.8677, 2.2753, 13.8682)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B6A #5D6A1B

analogous

#1B356A #281B6A #4F1B6A

triadic

#281B6A #6A281B #1B6A28

tetradic

#281B6A #6A1B35 #5D6A1B #1B6A4F

square

#281B6A #6A1B35 #5D6A1B #1B6A4F

split-complementary

#281B6A #6A4F1B #356A1B

monochromatic

#090618 #160F39 #281B6A #3A279B #4D34CB

Accessibility & contrast

On white

14.43

#281B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#281B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B6A

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B6A	#FFFFFF	#000000	##FFFFFF
##281B6A	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6C

Deuteranopia (green-blind)

#002769

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #281b6a;
/* rgb */ color: rgb(40, 27, 106);
/* oklch */ color: oklch(29.6% 0.130 282.6);

Tailwind

colors: {
  custom: {
    50: '#6b5995',
    500: '#281b6a',
    950: '#000000',
  },
}

SCSS

$custom: #281b6a;
$custom-light: #6b5995;
$custom-dark: #000000;

JSON

{
  "hex": "#281b6a",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 106
  },
  "hsl": {
    "h": 249.873,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.2965,
    "c": 0.12973,
    "h": 282.6
  },
  "luminance": 0.02276
}

Semantic roles & 50–950 ramp

primary

#281B6A

secondary

#909F42

accent

#E345C9

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #281B6A

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

Preview Lab → · Contrast checker → · Palette generator →