#313799#313799

#313799 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.7% C 0.157 H 274.0°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#313799
RGB	rgb(49, 55, 153)
HSL	hsl(237, 51%, 40%)
HSV	hsv(237, 68%, 60%)
CMYK	cmyk(68%, 64.1%, 0%, 40%)
CIE-LAB	lab(28.60, 30.29, -54.37)
CIE-LCH	lch(28.60, 62.24, 299.13°)
OKLab	oklab(39.67% 0.011 -0.1568)
OKLCH	oklch(39.67% 0.157 274)
XYZ	xyz(8.3807, 5.6845, 30.7864)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313799 #999331

analogous

#316B99 #313799 #5F3199

triadic

#313799 #993137 #379931

tetradic

#313799 #99316B #999331 #31995F

square

#313799 #99316B #999331 #31995F

split-complementary

#313799 #995F31 #6B9931

monochromatic

#13163C #22266B #313799 #444BC3 #7278D2

Accessibility & contrast

On white

9.83

#313799 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#313799 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313799

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313799	#FFFFFF	#000000	##FFFFFF
##313799	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005062

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313799;
/* rgb */ color: rgb(49, 55, 153);
/* oklch */ color: oklch(39.7% 0.157 274.0);

Tailwind

colors: {
  custom: {
    50: '#776eb8',
    500: '#313799',
    950: '#000000',
  },
}

SCSS

$custom: #313799;
$custom-light: #776eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#313799",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 153
  },
  "hsl": {
    "h": 236.538,
    "s": 51.485,
    "l": 39.608
  },
  "oklch": {
    "l": 0.39675,
    "c": 0.1572,
    "h": 274
  },
  "luminance": 0.05685
}

Semantic roles & 50–950 ramp

primary

#313799

secondary

#BAB56C

accent

#D34DDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #313799

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

Preview Lab → · Contrast checker → · Palette generator →