#281D8C#281D8C

#281D8C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.6% C 0.172 H 276.3°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#281D8C
RGB	rgb(40, 29, 140)
HSL	hsl(246, 66%, 33%)
HSV	hsv(246, 79%, 55%)
CMYK	cmyk(71.4%, 79.3%, 0%, 45.1%)
CIE-LAB	lab(20.91, 40.48, -59.00)
CIE-LCH	lch(20.91, 71.55, 304.46°)
OKLab	oklab(33.6% 0.0188 -0.1705)
OKLCH	oklch(33.6% 0.172 276.3)
XYZ	xyz(6.0465, 3.2227, 25.1093)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D8C #818C1D

analogous

#1D498C #281D8C #5F1D8C

triadic

#281D8C #8C281D #1D8C28

tetradic

#281D8C #8C1D49 #818C1D #1D8C5F

square

#281D8C #8C1D49 #818C1D #1D8C5F

split-complementary

#281D8C #8C5F1D #498C1D

monochromatic

#0B0827 #1A1259 #281D8C #3628BF #584AD9

Accessibility & contrast

On white

12.77

#281D8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#281D8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D8C

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D8C	#FFFFFF	#000000	##FFFFFF
##281D8C	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378F

Deuteranopia (green-blind)

#002D8A

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281d8c;
/* rgb */ color: rgb(40, 29, 140);
/* oklch */ color: oklch(33.6% 0.172 276.3);

Tailwind

colors: {
  custom: {
    50: '#725caf',
    500: '#281d8c',
    950: '#000000',
  },
}

SCSS

$custom: #281d8c;
$custom-light: #725caf;
$custom-dark: #000000;

JSON

{
  "hex": "#281d8c",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 140
  },
  "hsl": {
    "h": 245.946,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33598,
    "c": 0.17158,
    "h": 276.3
  },
  "luminance": 0.03223
}

Semantic roles & 50–950 ramp

primary

#281D8C

secondary

#B0BC49

accent

#E93FD8

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #281D8C

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

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