#281D9D#281D9D

#281D9D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.192 H 274.3°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#281D9D
RGB	rgb(40, 29, 157)
HSL	hsl(245, 69%, 36%)
HSV	hsv(245, 82%, 62%)
CMYK	cmyk(74.5%, 81.5%, 0%, 38.4%)
CIE-LAB	lab(22.87, 45.93, -66.26)
CIE-LCH	lch(22.87, 80.62, 304.73°)
OKLab	oklab(35.54% 0.0144 -0.1916)
OKLCH	oklch(35.54% 0.192 274.3)
XYZ	xyz(7.3982, 3.7634, 32.2283)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D9D #929D1D

analogous

#1D529D #281D9D #681D9D

triadic

#281D9D #9D281D #1D9D28

tetradic

#281D9D #9D1D52 #929D1D #1D9D68

square

#281D9D #9D1D52 #929D1D #1D9D68

split-complementary

#281D9D #9D681D #529D1D

monochromatic

#0E0A36 #1B1369 #281D9D #3527D1 #6155E0

Accessibility & contrast

On white

11.98

#281D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#281D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D9D

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D9D	#FFFFFF	#000000	##FFFFFF
##281D9D	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#00319B

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #281d9d;
/* rgb */ color: rgb(40, 29, 157);
/* oklch */ color: oklch(35.5% 0.192 274.3);

Tailwind

colors: {
  custom: {
    50: '#765dbb',
    500: '#281d9d',
    950: '#000000',
  },
}

SCSS

$custom: #281d9d;
$custom-light: #765dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#281d9d",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 157
  },
  "hsl": {
    "h": 245.156,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35538,
    "c": 0.19219,
    "h": 274.3
  },
  "luminance": 0.03764
}

Semantic roles & 50–950 ramp

primary

#281D9D

secondary

#B9C353

accent

#EC3CDD

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281D9D

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

Preview Lab → · Contrast checker → · Palette generator →