#281D8E#281D8E

#281D8E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.174 H 276.0°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#281D8E
RGB	rgb(40, 29, 142)
HSL	hsl(246, 66%, 34%)
HSV	hsv(246, 80%, 56%)
CMYK	cmyk(71.8%, 79.6%, 0%, 44.3%)
CIE-LAB	lab(21.14, 41.13, -59.87)
CIE-LCH	lch(21.14, 72.64, 304.49°)
OKLab	oklab(33.82% 0.0183 -0.1731)
OKLCH	oklch(33.82% 0.174 276)
XYZ	xyz(6.1953, 3.2823, 25.8930)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D8E #838E1D

analogous

#1D4A8E #281D8E #601D8E

triadic

#281D8E #8E281D #1D8E28

tetradic

#281D8E #8E1D4A #838E1D #1D8E60

square

#281D8E #8E1D4A #838E1D #1D8E60

split-complementary

#281D8E #8E601D #4A8E1D

monochromatic

#0B0828 #1A135B #281D8E #3627C1 #594BDA

Accessibility & contrast

On white

12.68

#281D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#281D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D8E

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D8E	#FFFFFF	#000000	##FFFFFF
##281D8E	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003891

Deuteranopia (green-blind)

#002E8C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281d8e;
/* rgb */ color: rgb(40, 29, 142);
/* oklch */ color: oklch(33.8% 0.174 276.0);

Tailwind

colors: {
  custom: {
    50: '#735cb0',
    500: '#281d8e',
    950: '#000000',
  },
}

SCSS

$custom: #281d8e;
$custom-light: #735cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#281d8e",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 142
  },
  "hsl": {
    "h": 245.841,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33823,
    "c": 0.17405,
    "h": 276
  },
  "luminance": 0.03283
}

Semantic roles & 50–950 ramp

primary

#281D8E

secondary

#B1BD4A

accent

#E93FD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281D8E

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

Preview Lab → · Contrast checker → · Palette generator →