#313A83#313A83

#313A83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.4% C 0.122 H 273.9°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#313A83
RGB	rgb(49, 58, 131)
HSL	hsl(233, 46%, 35%)
HSV	hsv(233, 63%, 51%)
CMYK	cmyk(62.6%, 55.7%, 0%, 48.6%)
CIE-LAB	lab(27.62, 20.31, -42.39)
CIE-LCH	lch(27.62, 47.00, 295.60°)
OKLab	oklab(38.39% 0.0083 -0.1216)
OKLCH	oklch(38.39% 0.122 273.9)
XYZ	xyz(6.8751, 5.3172, 22.1324)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A83 #837A31

analogous

#316383 #313A83 #513183

triadic

#313A83 #83313A #3A8331

tetradic

#313A83 #833163 #837A31 #318351

square

#313A83 #833163 #837A31 #318351

split-complementary

#313A83 #835131 #638331

monochromatic

#10132A #202656 #313A83 #424EB0 #6872C6

Accessibility & contrast

On white

10.18

#313A83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#313A83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A83

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A83	#FFFFFF	#000000	##FFFFFF
##313A83	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094586

Deuteranopia (green-blind)

#003E81

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313a83;
/* rgb */ color: rgb(49, 58, 131);
/* oklch */ color: oklch(38.4% 0.122 273.9);

Tailwind

colors: {
  custom: {
    50: '#7270a8',
    500: '#313a83',
    950: '#000000',
  },
}

SCSS

$custom: #313a83;
$custom-light: #7270a8;
$custom-dark: #000000;

JSON

{
  "hex": "#313a83",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 131
  },
  "hsl": {
    "h": 233.415,
    "s": 45.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38391,
    "c": 0.12185,
    "h": 273.9
  },
  "luminance": 0.05318
}

Semantic roles & 50–950 ramp

primary

#313A83

secondary

#AEA662

accent

#C753D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313A83

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

Preview Lab → · Contrast checker → · Palette generator →