#331FAD#331FAD

#331FAD is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.4% C 0.207 H 276.8°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#331FAD
RGB	rgb(51, 31, 173)
HSL	hsl(248, 70%, 40%)
HSV	hsv(248, 82%, 68%)
CMYK	cmyk(70.5%, 82.1%, 0%, 32.2%)
CIE-LAB	lab(25.86, 50.75, -70.99)
CIE-LCH	lch(25.86, 87.26, 305.56°)
OKLab	oklab(38.36% 0.0243 -0.2051)
OKLCH	oklch(38.36% 0.207 276.8)
XYZ	xyz(9.3956, 4.7000, 39.9391)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331FAD #99AD1F

analogous

#1F52AD #331FAD #7A1FAD

triadic

#331FAD #AD331F #1FAD33

tetradic

#331FAD #AD1F52 #99AD1F #1FAD7A

square

#331FAD #AD1F52 #99AD1F #1FAD7A

split-complementary

#331FAD #AD7A1F #52AD1F

monochromatic

#140C45 #241679 #331FAD #472FDA #7563E3

Accessibility & contrast

On white

10.82

#331FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#331FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331FAD

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331FAD	#FFFFFF	#000000	##FFFFFF
##331FAD	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B1

Deuteranopia (green-blind)

#0037AB

Tritanopia (blue-blind)

#004C67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #331fad;
/* rgb */ color: rgb(51, 31, 173);
/* oklch */ color: oklch(38.4% 0.207 276.8);

Tailwind

colors: {
  custom: {
    50: '#7e60c7',
    500: '#331fad',
    950: '#000000',
  },
}

SCSS

$custom: #331fad;
$custom-light: #7e60c7;
$custom-dark: #000000;

JSON

{
  "hex": "#331fad",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 173
  },
  "hsl": {
    "h": 248.451,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.38359,
    "c": 0.20659,
    "h": 276.8
  },
  "luminance": 0.04701
}

Semantic roles & 50–950 ramp

primary

#331FAD

secondary

#B9C860

accent

#EC3BD3

background

#F8F5FC

surface

#F0EAF8

border

#CBC6D1

text

#0C0513

muted

#7D7982

Preview Lab

Preview with #331FAD

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

Preview Lab → · Contrast checker → · Palette generator →