#331AB3#331AB3

#331AB3 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.6% C 0.217 H 276.4°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#331AB3
RGB	rgb(51, 26, 179)
HSL	hsl(250, 75%, 40%)
HSV	hsv(250, 85%, 70%)
CMYK	cmyk(71.5%, 85.5%, 0%, 29.8%)
CIE-LAB	lab(25.85, 54.61, -74.61)
CIE-LCH	lch(25.85, 92.46, 306.20°)
OKLab	oklab(38.56% 0.0242 -0.2155)
OKLCH	oklch(38.56% 0.217 276.4)
XYZ	xyz(9.8687, 4.6963, 43.0255)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331AB3 #9AB31A

analogous

#1A4DB3 #331AB3 #7F1AB3

triadic

#331AB3 #B3331A #1AB333

tetradic

#331AB3 #B31A4D #9AB31A #1AB37F

square

#331AB3 #B31A4D #9AB31A #1AB37F

split-complementary

#331AB3 #B37F1A #4DB31A

monochromatic

#150A48 #24127E #331AB3 #482AE0 #7660E8

Accessibility & contrast

On white

10.83

#331AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#331AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331AB3

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331AB3	#FFFFFF	#000000	##FFFFFF
##331AB3	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B7

Deuteranopia (green-blind)

#0037B0

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #331ab3;
/* rgb */ color: rgb(51, 26, 179);
/* oklch */ color: oklch(38.6% 0.217 276.4);

Tailwind

colors: {
  custom: {
    50: '#805ecb',
    500: '#331ab3',
    950: '#000000',
  },
}

SCSS

$custom: #331ab3;
$custom-light: #805ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#331ab3",
  "rgb": {
    "r": 51,
    "g": 26,
    "b": 179
  },
  "hsl": {
    "h": 249.804,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38556,
    "c": 0.21691,
    "h": 276.4
  },
  "luminance": 0.04697
}

Semantic roles & 50–950 ramp

primary

#331AB3

secondary

#BACC5D

accent

#F137D3

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #331AB3

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

Preview Lab → · Contrast checker → · Palette generator →