#281B9E#281B9E

#281B9E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.195 H 274.4°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#281B9E
RGB	rgb(40, 27, 158)
HSL	hsl(246, 71%, 36%)
HSV	hsv(246, 83%, 62%)
CMYK	cmyk(74.7%, 82.9%, 0%, 38%)
CIE-LAB	lab(22.66, 47.20, -67.22)
CIE-LCH	lch(22.66, 82.14, 305.07°)
OKLab	oklab(35.43% 0.0148 -0.1944)
OKLCH	oklch(35.43% 0.195 274.4)
XYZ	xyz(7.4365, 3.7029, 32.6639)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B9E #919E1B

analogous

#1B509E #281B9E #6A1B9E

triadic

#281B9E #9E281B #1B9E28

tetradic

#281B9E #9E1B50 #919E1B #1B9E6A

square

#281B9E #9E1B50 #919E1B #1B9E6A

split-complementary

#281B9E #9E6A1B #509E1B

monochromatic

#0E0935 #1B126A #281B9E #3524D2 #6052E1

Accessibility & contrast

On white

12.06

#281B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#281B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B9E

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B9E	#FFFFFF	#000000	##FFFFFF
##281B9E	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#00309C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281b9e;
/* rgb */ color: rgb(40, 27, 158);
/* oklch */ color: oklch(35.4% 0.195 274.4);

Tailwind

colors: {
  custom: {
    50: '#775cbc',
    500: '#281b9e',
    950: '#000000',
  },
}

SCSS

$custom: #281b9e;
$custom-light: #775cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#281b9e",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 245.954,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35428,
    "c": 0.19496,
    "h": 274.4
  },
  "luminance": 0.03704
}

Semantic roles & 50–950 ramp

primary

#281B9E

secondary

#B9C451

accent

#EE3ADC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281B9E

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

Preview Lab → · Contrast checker → · Palette generator →