#281B6E#281B6E

#281B6E is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.1% C 0.135 H 281.7°. Best body text is #FFFFFF at 14.26:1 contrast (WCAG AA passes).

Color values

HEX	#281B6E
RGB	rgb(40, 27, 110)
HSL	hsl(249, 61%, 27%)
HSV	hsv(249, 75%, 43%)
CMYK	cmyk(63.6%, 75.5%, 0%, 56.9%)
CIE-LAB	lab(17.28, 31.65, -45.90)
CIE-LCH	lch(17.28, 55.75, 304.59°)
OKLab	oklab(30.06% 0.0274 -0.1323)
OKLCH	oklch(30.06% 0.135 281.7)
XYZ	xyz(4.0806, 2.3605, 14.9894)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B6E #616E1B

analogous

#1B376E #281B6E #521B6E

triadic

#281B6E #6E281B #1B6E28

tetradic

#281B6E #6E1B37 #616E1B #1B6E52

square

#281B6E #6E1B37 #616E1B #1B6E52

split-complementary

#281B6E #6E521B #376E1B

monochromatic

#090619 #160F3D #281B6E #3A279F #4E36CE

Accessibility & contrast

On white

14.26

#281B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#281B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B6E

14.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B6E	#FFFFFF	#000000	##FFFFFF
##281B6E	1.00	14.26	1.47	14.26
#FFFFFF	14.26	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D70

Deuteranopia (green-blind)

#00276C

Tritanopia (blue-blind)

#003242

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #281b6e;
/* rgb */ color: rgb(40, 27, 110);
/* oklch */ color: oklch(30.1% 0.135 281.7);

Tailwind

colors: {
  custom: {
    50: '#6c5998',
    500: '#281b6e',
    950: '#000000',
  },
}

SCSS

$custom: #281b6e;
$custom-light: #6c5998;
$custom-dark: #000000;

JSON

{
  "hex": "#281b6e",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 110
  },
  "hsl": {
    "h": 249.398,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.30062,
    "c": 0.13512,
    "h": 281.7
  },
  "luminance": 0.02361
}

Semantic roles & 50–950 ramp

primary

#281B6E

secondary

#94A342

accent

#E444CB

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #281B6E

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

Preview Lab → · Contrast checker → · Palette generator →