#281881#281881

#281881 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.163 H 278.6°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#281881
RGB	rgb(40, 24, 129)
HSL	hsl(249, 69%, 30%)
HSV	hsv(249, 81%, 51%)
CMYK	cmyk(69%, 81.4%, 0%, 49.4%)
CIE-LAB	lab(18.75, 39.57, -55.66)
CIE-LCH	lch(18.75, 68.29, 305.41°)
OKLab	oklab(31.72% 0.0244 -0.1607)
OKLCH	oklch(31.72% 0.163 278.6)
XYZ	xyz(5.1629, 2.6889, 21.0116)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281881 #718118

analogous

#183C81 #281881 #5D1881

triadic

#281881 #812818 #188128

tetradic

#281881 #81183C #718118 #18815D

square

#281881 #81183C #718118 #18815D

split-complementary

#281881 #815D18 #3C8118

monochromatic

#08051A #180E4D #281881 #3822B5 #5239DA

Accessibility & contrast

On white

13.66

#281881 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#281881 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281881

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281881	#FFFFFF	#000000	##FFFFFF
##281881	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00297F

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281881;
/* rgb */ color: rgb(40, 24, 129);
/* oklch */ color: oklch(31.7% 0.163 278.6);

Tailwind

colors: {
  custom: {
    50: '#7058a7',
    500: '#281881',
    950: '#000000',
  },
}

SCSS

$custom: #281881;
$custom-light: #7058a7;
$custom-dark: #000000;

JSON

{
  "hex": "#281881",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 129
  },
  "hsl": {
    "h": 249.143,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.31719,
    "c": 0.16259,
    "h": 278.6
  },
  "luminance": 0.02689
}

Semantic roles & 50–950 ramp

primary

#281881

secondary

#A3B540

accent

#EB3CD1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281881

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

Preview Lab → · Contrast checker → · Palette generator →