#311E99#311E99

#311E99 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.9% C 0.184 H 278.6°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#311E99
RGB	rgb(49, 30, 153)
HSL	hsl(249, 67%, 36%)
HSV	hsv(249, 80%, 60%)
CMYK	cmyk(68%, 80.4%, 0%, 40%)
CIE-LAB	lab(23.27, 44.97, -63.13)
CIE-LCH	lch(23.27, 77.51, 305.47°)
OKLab	oklab(35.86% 0.0277 -0.1823)
OKLCH	oklch(35.86% 0.184 278.6)
XYZ	xyz(7.4788, 3.8808, 30.4858)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311E99 #86991E

analogous

#1E4899 #311E99 #6E1E99

triadic

#311E99 #99311E #1E9931

tetradic

#311E99 #991E48 #86991E #1E996E

square

#311E99 #991E48 #86991E #1E996E

split-complementary

#311E99 #996E1E #48991E

monochromatic

#100A33 #211466 #311E99 #4128CC #6954DD

Accessibility & contrast

On white

11.82

#311E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#311E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311E99

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311E99	#FFFFFF	#000000	##FFFFFF
##311E99	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9C

Deuteranopia (green-blind)

#003297

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #311e99;
/* rgb */ color: rgb(49, 30, 153);
/* oklch */ color: oklch(35.9% 0.184 278.6);

Tailwind

colors: {
  custom: {
    50: '#795eb8',
    500: '#311e99',
    950: '#000000',
  },
}

SCSS

$custom: #311e99;
$custom-light: #795eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#311e99",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 153
  },
  "hsl": {
    "h": 249.268,
    "s": 67.213,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35859,
    "c": 0.18442,
    "h": 278.6
  },
  "luminance": 0.03881
}

Semantic roles & 50–950 ramp

primary

#311E99

secondary

#B0C152

accent

#EA3ECF

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #311E99

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

Preview Lab → · Contrast checker → · Palette generator →