#311D96#311D96

#311D96 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.182 H 279.2°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#311D96
RGB	rgb(49, 29, 150)
HSL	hsl(250, 68%, 35%)
HSV	hsv(250, 81%, 59%)
CMYK	cmyk(67.3%, 80.7%, 0%, 41.2%)
CIE-LAB	lab(22.77, 44.54, -62.12)
CIE-LCH	lch(22.77, 76.44, 305.64°)
OKLab	oklab(35.41% 0.0291 -0.1794)
OKLCH	oklch(35.41% 0.182 279.2)
XYZ	xyz(7.2092, 3.7331, 29.1889)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D96 #82961D

analogous

#1D4696 #311D96 #6D1D96

triadic

#311D96 #96311D #1D9631

tetradic

#311D96 #961D46 #82961D #1D966D

square

#311D96 #961D46 #82961D #1D966D

split-complementary

#311D96 #966D1D #46961D

monochromatic

#0F092F #201363 #311D96 #4227C9 #6850DD

Accessibility & contrast

On white

12.02

#311D96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#311D96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D96

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D96	#FFFFFF	#000000	##FFFFFF
##311D96	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B99

Deuteranopia (green-blind)

#003294

Tritanopia (blue-blind)

#00425A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #311d96;
/* rgb */ color: rgb(49, 29, 150);
/* oklch */ color: oklch(35.4% 0.182 279.2);

Tailwind

colors: {
  custom: {
    50: '#785db6',
    500: '#311d96',
    950: '#000000',
  },
}

SCSS

$custom: #311d96;
$custom-light: #785db6;
$custom-dark: #000000;

JSON

{
  "hex": "#311d96",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 150
  },
  "hsl": {
    "h": 249.917,
    "s": 67.598,
    "l": 35.098
  },
  "oklch": {
    "l": 0.3541,
    "c": 0.18172,
    "h": 279.2
  },
  "luminance": 0.03734
}

Semantic roles & 50–950 ramp

primary

#311D96

secondary

#ADC04F

accent

#EA3DCE

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D96

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

Preview Lab → · Contrast checker → · Palette generator →