#331EBB#331EBB

#331EBB is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.9% C 0.223 H 275.3°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#331EBB
RGB	rgb(51, 30, 187)
HSL	hsl(248, 72%, 43%)
HSV	hsv(248, 84%, 73%)
CMYK	cmyk(72.7%, 84%, 0%, 26.7%)
CIE-LAB	lab(27.35, 55.29, -76.88)
CIE-LCH	lch(27.35, 94.70, 305.72°)
OKLab	oklab(39.86% 0.0205 -0.2222)
OKLCH	oklch(39.86% 0.223 275.3)
XYZ	xyz(10.7962, 5.2191, 47.4425)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331EBB #A6BB1E

analogous

#1E58BB #331EBB #811EBB

triadic

#331EBB #BB331E #1EBB33

tetradic

#331EBB #BB1E58 #A6BB1E #1EBB81

square

#331EBB #BB1E58 #A6BB1E #1EBB81

split-complementary

#331EBB #BB811E #58BB1E

monochromatic

#160D52 #251686 #331EBB #4E37DF #7C6CE7

Accessibility & contrast

On white

10.27

#331EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#331EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331EBB

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331EBB	#FFFFFF	#000000	##FFFFFF
##331EBB	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047BF

Deuteranopia (green-blind)

#0039B8

Tritanopia (blue-blind)

#00516F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #331ebb;
/* rgb */ color: rgb(51, 30, 187);
/* oklch */ color: oklch(39.9% 0.223 275.3);

Tailwind

colors: {
  custom: {
    50: '#8160d1',
    500: '#331ebb',
    950: '#000000',
  },
}

SCSS

$custom: #331ebb;
$custom-light: #8160d1;
$custom-dark: #000000;

JSON

{
  "hex": "#331ebb",
  "rgb": {
    "r": 51,
    "g": 30,
    "b": 187
  },
  "hsl": {
    "h": 248.025,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39857,
    "c": 0.22317,
    "h": 275.3
  },
  "luminance": 0.0522
}

Semantic roles & 50–950 ramp

primary

#331EBB

secondary

#C0CD67

accent

#EF39D7

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0C0514

muted

#7D7983

Preview Lab

Preview with #331EBB

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

Preview Lab → · Contrast checker → · Palette generator →