#331FA4#331FA4

#331FA4 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.4% C 0.196 H 277.9°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#331FA4
RGB	rgb(51, 31, 164)
HSL	hsl(249, 68%, 38%)
HSV	hsv(249, 81%, 64%)
CMYK	cmyk(68.9%, 81.1%, 0%, 35.7%)
CIE-LAB	lab(24.84, 48.04, -67.25)
CIE-LCH	lch(24.84, 82.65, 305.54°)
OKLab	oklab(37.35% 0.027 -0.1943)
OKLCH	oklch(37.35% 0.196 277.9)
XYZ	xyz(8.5539, 4.3634, 35.5062)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331FA4 #90A41F

analogous

#1F4DA4 #331FA4 #761FA4

triadic

#331FA4 #A4331F #1FA433

tetradic

#331FA4 #A41F4D #90A41F #1FA476

square

#331FA4 #A41F4D #90A41F #1FA476

split-complementary

#331FA4 #A4761F #4DA41F

monochromatic

#130C3D #231571 #331FA4 #442AD7 #715DE0

Accessibility & contrast

On white

11.21

#331FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#331FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331FA4

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331FA4	#FFFFFF	#000000	##FFFFFF
##331FA4	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A8

Deuteranopia (green-blind)

#0035A2

Tritanopia (blue-blind)

#004862

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #331fa4;
/* rgb */ color: rgb(51, 31, 164);
/* oklch */ color: oklch(37.4% 0.196 277.9);

Tailwind

colors: {
  custom: {
    50: '#7c5fc0',
    500: '#331fa4',
    950: '#000000',
  },
}

SCSS

$custom: #331fa4;
$custom-light: #7c5fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#331fa4",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 164
  },
  "hsl": {
    "h": 249.023,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.37351,
    "c": 0.19614,
    "h": 277.9
  },
  "luminance": 0.04364
}

Semantic roles & 50–950 ramp

primary

#331FA4

secondary

#B5C55A

accent

#EB3DD1

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #331FA4

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

Preview Lab → · Contrast checker → · Palette generator →