#281B6D#281B6D

#281B6D is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.134 H 281.9°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#281B6D
RGB	rgb(40, 27, 109)
HSL	hsl(250, 60%, 27%)
HSV	hsv(250, 75%, 43%)
CMYK	cmyk(63.3%, 75.2%, 0%, 57.3%)
CIE-LAB	lab(17.17, 31.31, -45.41)
CIE-LCH	lch(17.17, 55.16, 304.59°)
OKLab	oklab(29.96% 0.0276 -0.1309)
OKLCH	oklch(29.96% 0.134 281.9)
XYZ	xyz(4.0265, 2.3388, 14.7043)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B6D #606D1B

analogous

#1B376D #281B6D #511B6D

triadic

#281B6D #6D281B #1B6D28

tetradic

#281B6D #6D1B37 #606D1B #1B6D51

square

#281B6D #6D1B37 #606D1B #1B6D51

split-complementary

#281B6D #6D511B #376D1B

monochromatic

#090619 #160F3C #281B6D #3A279E #4D35CD

Accessibility & contrast

On white

14.31

#281B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#281B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B6D

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B6D	#FFFFFF	#000000	##FFFFFF
##281B6D	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6F

Deuteranopia (green-blind)

#00276B

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #281b6d;
/* rgb */ color: rgb(40, 27, 109);
/* oklch */ color: oklch(30.0% 0.134 281.9);

Tailwind

colors: {
  custom: {
    50: '#6b5998',
    500: '#281b6d',
    950: '#000000',
  },
}

SCSS

$custom: #281b6d;
$custom-light: #6b5998;
$custom-dark: #000000;

JSON

{
  "hex": "#281b6d",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 109
  },
  "hsl": {
    "h": 249.512,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.29959,
    "c": 0.13378,
    "h": 281.9
  },
  "luminance": 0.02339
}

Semantic roles & 50–950 ramp

primary

#281B6D

secondary

#93A242

accent

#E344CA

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #281B6D

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

Preview Lab → · Contrast checker → · Palette generator →