#331DAD#331DAD

#331DAD is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 38.1% C 0.208 H 276.9°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#331DAD
RGB	rgb(51, 29, 173)
HSL	hsl(249, 71%, 40%)
HSV	hsv(249, 83%, 68%)
CMYK	cmyk(70.5%, 83.2%, 0%, 32.2%)
CIE-LAB	lab(25.56, 51.64, -71.49)
CIE-LCH	lch(25.56, 88.19, 305.84°)
OKLab	oklab(38.15% 0.0251 -0.2066)
OKLCH	oklch(38.15% 0.208 276.9)
XYZ	xyz(9.3450, 4.5988, 39.9222)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331DAD #97AD1D

analogous

#1D4FAD #331DAD #7B1DAD

triadic

#331DAD #AD331D #1DAD33

tetradic

#331DAD #AD1D4F #97AD1D #1DAD7B

square

#331DAD #AD1D4F #97AD1D #1DAD7B

split-complementary

#331DAD #AD7B1D #4FAD1D

monochromatic

#140B44 #241479 #331DAD #472CDC #7460E4

Accessibility & contrast

On white

10.94

#331DAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#331DAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331DAD

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331DAD	#FFFFFF	#000000	##FFFFFF
##331DAD	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B1

Deuteranopia (green-blind)

#0036AB

Tritanopia (blue-blind)

#004B67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #331dad;
/* rgb */ color: rgb(51, 29, 173);
/* oklch */ color: oklch(38.1% 0.208 276.9);

Tailwind

colors: {
  custom: {
    50: '#7e5fc7',
    500: '#331dad',
    950: '#000000',
  },
}

SCSS

$custom: #331dad;
$custom-light: #7e5fc7;
$custom-dark: #000000;

JSON

{
  "hex": "#331dad",
  "rgb": {
    "r": 51,
    "g": 29,
    "b": 173
  },
  "hsl": {
    "h": 249.167,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.3815,
    "c": 0.20809,
    "h": 276.9
  },
  "luminance": 0.046
}

Semantic roles & 50–950 ramp

primary

#331DAD

secondary

#B8C95D

accent

#EE3AD2

background

#F8F5FC

surface

#F0E9F8

border

#CBC5D1

text

#0C0513

muted

#7D7982

Preview Lab

Preview with #331DAD

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

Preview Lab → · Contrast checker → · Palette generator →