#281B6B#281B6B

#281B6B is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.131 H 282.4°. Best body text is #FFFFFF at 14.39:1 contrast (WCAG AA passes).

Color values

HEX	#281B6B
RGB	rgb(40, 27, 107)
HSL	hsl(250, 60%, 26%)
HSV	hsv(250, 75%, 42%)
CMYK	cmyk(62.6%, 74.8%, 0%, 58%)
CIE-LAB	lab(16.97, 30.63, -44.44)
CIE-LCH	lch(16.97, 53.98, 304.58°)
OKLab	oklab(29.75% 0.028 -0.128)
OKLCH	oklch(29.75% 0.131 282.4)
XYZ	xyz(3.9200, 2.2963, 14.1437)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B6B #5E6B1B

analogous

#1B366B #281B6B #501B6B

triadic

#281B6B #6B281B #1B6B28

tetradic

#281B6B #6B1B36 #5E6B1B #1B6B50

square

#281B6B #6B1B36 #5E6B1B #1B6B50

split-complementary

#281B6B #6B501B #366B1B

monochromatic

#090618 #160F3A #281B6B #3A279C #4D35CC

Accessibility & contrast

On white

14.39

#281B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#281B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B6B

14.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B6B	#FFFFFF	#000000	##FFFFFF
##281B6B	1.00	14.39	1.46	14.39
#FFFFFF	14.39	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6D

Deuteranopia (green-blind)

#002769

Tritanopia (blue-blind)

#003141

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #281b6b;
/* rgb */ color: rgb(40, 27, 107);
/* oklch */ color: oklch(29.8% 0.131 282.4);

Tailwind

colors: {
  custom: {
    50: '#6b5996',
    500: '#281b6b',
    950: '#000000',
  },
}

SCSS

$custom: #281b6b;
$custom-light: #6b5996;
$custom-dark: #000000;

JSON

{
  "hex": "#281b6b",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 107
  },
  "hsl": {
    "h": 249.75,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.29753,
    "c": 0.13108,
    "h": 282.4
  },
  "luminance": 0.02297
}

Semantic roles & 50–950 ramp

primary

#281B6B

secondary

#91A042

accent

#E345C9

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #281B6B

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

Preview Lab → · Contrast checker → · Palette generator →