#281D8A#281D8A

#281D8A is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.169 H 276.6°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#281D8A
RGB	rgb(40, 29, 138)
HSL	hsl(246, 65%, 33%)
HSV	hsv(246, 79%, 54%)
CMYK	cmyk(71%, 79%, 0%, 45.9%)
CIE-LAB	lab(20.69, 39.83, -58.12)
CIE-LCH	lch(20.69, 70.46, 304.42°)
OKLab	oklab(33.38% 0.0193 -0.168)
OKLCH	oklch(33.38% 0.169 276.6)
XYZ	xyz(5.9004, 3.1643, 24.3396)
Luminance	0.0316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D8A #7F8A1D

analogous

#1D488A #281D8A #5E1D8A

triadic

#281D8A #8A281D #1D8A28

tetradic

#281D8A #8A1D48 #7F8A1D #1D8A5E

square

#281D8A #8A1D48 #7F8A1D #1D8A5E

split-complementary

#281D8A #8A5E1D #488A1D

monochromatic

#0B0825 #191257 #281D8A #3728BD #5749D9

Accessibility & contrast

On white

12.86

#281D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#281D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D8A

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D8A	#FFFFFF	#000000	##FFFFFF
##281D8A	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281d8a;
/* rgb */ color: rgb(40, 29, 138);
/* oklch */ color: oklch(33.4% 0.169 276.6);

Tailwind

colors: {
  custom: {
    50: '#725cad',
    500: '#281d8a',
    950: '#000000',
  },
}

SCSS

$custom: #281d8a;
$custom-light: #725cad;
$custom-dark: #000000;

JSON

{
  "hex": "#281d8a",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 138
  },
  "hsl": {
    "h": 246.055,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33375,
    "c": 0.16909,
    "h": 276.6
  },
  "luminance": 0.03165
}

Semantic roles & 50–950 ramp

primary

#281D8A

secondary

#AFBB48

accent

#E840D7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281D8A

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

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