#281C8B#281C8B

#281C8B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.4% C 0.171 H 276.6°. Best body text is #FFFFFF at 12.89:1 contrast (WCAG AA passes).

Color values

HEX	#281C8B
RGB	rgb(40, 28, 139)
HSL	hsl(246, 66%, 33%)
HSV	hsv(246, 80%, 55%)
CMYK	cmyk(71.2%, 79.9%, 0%, 45.5%)
CIE-LAB	lab(20.62, 40.69, -58.87)
CIE-LCH	lch(20.62, 71.56, 304.65°)
OKLab	oklab(33.36% 0.0195 -0.1701)
OKLCH	oklch(33.36% 0.171 276.6)
XYZ	xyz(5.9490, 3.1452, 24.7147)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C8B #7F8B1C

analogous

#1C488B #281C8B #5F1C8B

triadic

#281C8B #8B281C #1C8B28

tetradic

#281C8B #8B1C48 #7F8B1C #1C8B5F

square

#281C8B #8B1C48 #7F8B1C #1C8B5F

split-complementary

#281C8B #8B5F1C #488B1C

monochromatic

#0B0725 #191258 #281C8B #3726BE #5747DA

Accessibility & contrast

On white

12.89

#281C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#281C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C8B

12.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C8B	#FFFFFF	#000000	##FFFFFF
##281C8B	1.00	12.89	1.63	12.89
#FFFFFF	12.89	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002D89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281c8b;
/* rgb */ color: rgb(40, 28, 139);
/* oklch */ color: oklch(33.4% 0.171 276.6);

Tailwind

colors: {
  custom: {
    50: '#725bae',
    500: '#281c8b',
    950: '#000000',
  },
}

SCSS

$custom: #281c8b;
$custom-light: #725bae;
$custom-dark: #000000;

JSON

{
  "hex": "#281c8b",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 139
  },
  "hsl": {
    "h": 246.486,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33356,
    "c": 0.17127,
    "h": 276.6
  },
  "luminance": 0.03146
}

Semantic roles & 50–950 ramp

primary

#281C8B

secondary

#AFBC47

accent

#E93ED7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #281C8B

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

Preview Lab → · Contrast checker → · Palette generator →