#281D8D#281D8D

#281D8D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.173 H 276.2°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#281D8D
RGB	rgb(40, 29, 141)
HSL	hsl(246, 66%, 33%)
HSV	hsv(246, 79%, 55%)
CMYK	cmyk(71.6%, 79.4%, 0%, 44.7%)
CIE-LAB	lab(21.03, 40.81, -59.44)
CIE-LCH	lch(21.03, 72.10, 304.47°)
OKLab	oklab(33.71% 0.0185 -0.1718)
OKLCH	oklch(33.71% 0.173 276.2)
XYZ	xyz(6.1206, 3.2524, 25.4994)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D8D #828D1D

analogous

#1D4A8D #281D8D #601D8D

triadic

#281D8D #8D281D #1D8D28

tetradic

#281D8D #8D1D4A #828D1D #1D8D60

square

#281D8D #8D1D4A #828D1D #1D8D60

split-complementary

#281D8D #8D601D #4A8D1D

monochromatic

#0B0827 #1A135A #281D8D #3627C0 #594BDA

Accessibility & contrast

On white

12.72

#281D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#281D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D8D

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D8D	#FFFFFF	#000000	##FFFFFF
##281D8D	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003790

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#003F54

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281d8d;
/* rgb */ color: rgb(40, 29, 141);
/* oklch */ color: oklch(33.7% 0.173 276.2);

Tailwind

colors: {
  custom: {
    50: '#725cb0',
    500: '#281d8d',
    950: '#000000',
  },
}

SCSS

$custom: #281d8d;
$custom-light: #725cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#281d8d",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 141
  },
  "hsl": {
    "h": 245.893,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33711,
    "c": 0.17282,
    "h": 276.2
  },
  "luminance": 0.03253
}

Semantic roles & 50–950 ramp

primary

#281D8D

secondary

#B1BC4A

accent

#E93FD8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281D8D

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

Preview Lab → · Contrast checker → · Palette generator →