#281B9D#281B9D

#281B9D is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.3% C 0.194 H 274.5°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#281B9D
RGB	rgb(40, 27, 157)
HSL	hsl(246, 71%, 36%)
HSV	hsv(246, 83%, 62%)
CMYK	cmyk(74.5%, 82.8%, 0%, 38.4%)
CIE-LAB	lab(22.54, 46.89, -66.81)
CIE-LCH	lch(22.54, 81.62, 305.06°)
OKLab	oklab(35.31% 0.0151 -0.1932)
OKLCH	oklch(35.31% 0.194 274.5)
XYZ	xyz(7.3508, 3.6686, 32.2125)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B9D #909D1B

analogous

#1B4F9D #281B9D #691B9D

triadic

#281B9D #9D281B #1B9D28

tetradic

#281B9D #9D1B4F #909D1B #1B9D69

square

#281B9D #9D1B4F #909D1B #1B9D69

split-complementary

#281B9D #9D691B #4F9D1B

monochromatic

#0D0935 #1B1269 #281B9D #3524D1 #6051E1

Accessibility & contrast

On white

12.11

#281B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#281B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B9D

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B9D	#FFFFFF	#000000	##FFFFFF
##281B9D	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#00309B

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281b9d;
/* rgb */ color: rgb(40, 27, 157);
/* oklch */ color: oklch(35.3% 0.194 274.5);

Tailwind

colors: {
  custom: {
    50: '#775cbb',
    500: '#281b9d',
    950: '#000000',
  },
}

SCSS

$custom: #281b9d;
$custom-light: #775cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#281b9d",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 157
  },
  "hsl": {
    "h": 246,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.3531,
    "c": 0.19379,
    "h": 274.5
  },
  "luminance": 0.03669
}

Semantic roles & 50–950 ramp

primary

#281B9D

secondary

#B8C450

accent

#ED3ADC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281B9D

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

Preview Lab → · Contrast checker → · Palette generator →