#331F9F#331F9F

#331F9F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.8% C 0.190 H 278.6°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#331F9F
RGB	rgb(51, 31, 159)
HSL	hsl(249, 67%, 37%)
HSV	hsv(249, 81%, 62%)
CMYK	cmyk(67.9%, 80.5%, 0%, 37.6%)
CIE-LAB	lab(24.28, 46.52, -65.13)
CIE-LCH	lch(24.28, 80.04, 305.54°)
OKLab	oklab(36.8% 0.0284 -0.1881)
OKLCH	oklch(36.8% 0.19 278.6)
XYZ	xyz(8.1112, 4.1863, 33.1748)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331F9F #8B9F1F

analogous

#1F4B9F #331F9F #731F9F

triadic

#331F9F #9F331F #1F9F33

tetradic

#331F9F #9F1F4B #8B9F1F #1F9F73

square

#331F9F #9F1F4B #8B9F1F #1F9F73

split-complementary

#331F9F #9F731F #4B9F1F

monochromatic

#120B39 #23156C #331F9F #4329D2 #6E5ADF

Accessibility & contrast

On white

11.43

#331F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#331F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331F9F

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331F9F	#FFFFFF	#000000	##FFFFFF
##331F9F	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FA3

Deuteranopia (green-blind)

#00349D

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #331f9f;
/* rgb */ color: rgb(51, 31, 159);
/* oklch */ color: oklch(36.8% 0.190 278.6);

Tailwind

colors: {
  custom: {
    50: '#7b5fbd',
    500: '#331f9f',
    950: '#000000',
  },
}

SCSS

$custom: #331f9f;
$custom-light: #7b5fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#331f9f",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 159
  },
  "hsl": {
    "h": 249.375,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36797,
    "c": 0.19026,
    "h": 278.6
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#331F9F

secondary

#B2C357

accent

#EA3ECF

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #331F9F

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

Preview Lab → · Contrast checker → · Palette generator →