#331FA8#331FA8

#331FA8 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.8% C 0.201 H 277.4°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#331FA8
RGB	rgb(51, 31, 168)
HSL	hsl(249, 69%, 39%)
HSV	hsv(249, 82%, 66%)
CMYK	cmyk(69.6%, 81.5%, 0%, 34.1%)
CIE-LAB	lab(25.29, 49.25, -68.92)
CIE-LCH	lch(25.29, 84.71, 305.55°)
OKLab	oklab(37.8% 0.0258 -0.1991)
OKLCH	oklch(37.8% 0.201 277.4)
XYZ	xyz(8.9208, 4.5101, 37.4386)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331FA8 #94A81F

analogous

#1F50A8 #331FA8 #781FA8

triadic

#331FA8 #A8331F #1FA833

tetradic

#331FA8 #A81F50 #94A81F #1FA878

square

#331FA8 #A81F50 #94A81F #1FA878

split-complementary

#331FA8 #A8781F #50A81F

monochromatic

#140C41 #231574 #331FA8 #452CD8 #7360E2

Accessibility & contrast

On white

11.04

#331FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#331FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331FA8

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331FA8	#FFFFFF	#000000	##FFFFFF
##331FA8	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AC

Deuteranopia (green-blind)

#0036A6

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #331fa8;
/* rgb */ color: rgb(51, 31, 168);
/* oklch */ color: oklch(37.8% 0.201 277.4);

Tailwind

colors: {
  custom: {
    50: '#7d5fc3',
    500: '#331fa8',
    950: '#000000',
  },
}

SCSS

$custom: #331fa8;
$custom-light: #7d5fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#331fa8",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 168
  },
  "hsl": {
    "h": 248.759,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37797,
    "c": 0.20081,
    "h": 277.4
  },
  "luminance": 0.04511
}

Semantic roles & 50–950 ramp

primary

#331FA8

secondary

#B7C65D

accent

#EC3CD2

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #331FA8

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

Preview Lab → · Contrast checker → · Palette generator →