#313F83#313F83

#313F83 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.4% C 0.115 H 271.5°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#313F83
RGB	rgb(49, 63, 131)
HSL	hsl(230, 46%, 35%)
HSV	hsv(230, 63%, 51%)
CMYK	cmyk(62.6%, 51.9%, 0%, 48.6%)
CIE-LAB	lab(29.02, 16.91, -40.13)
CIE-LCH	lch(29.02, 43.55, 292.85°)
OKLab	oklab(39.45% 0.0029 -0.1149)
OKLCH	oklch(39.45% 0.115 271.5)
XYZ	xyz(7.1395, 5.8461, 22.2205)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F83 #837531

analogous

#316883 #313F83 #4C3183

triadic

#313F83 #83313F #3F8331

tetradic

#313F83 #833168 #837531 #31834C

square

#313F83 #833168 #837531 #31834C

split-complementary

#313F83 #834C31 #688331

monochromatic

#10142A #202A56 #313F83 #4254B0 #6878C6

Accessibility & contrast

On white

9.68

#313F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#313F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F83

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F83	#FFFFFF	#000000	##FFFFFF
##313F83	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4885

Deuteranopia (green-blind)

#084182

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313f83;
/* rgb */ color: rgb(49, 63, 131);
/* oklch */ color: oklch(39.4% 0.115 271.5);

Tailwind

colors: {
  custom: {
    50: '#7273a7',
    500: '#313f83',
    950: '#000000',
  },
}

SCSS

$custom: #313f83;
$custom-light: #7273a7;
$custom-dark: #000000;

JSON

{
  "hex": "#313f83",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 131
  },
  "hsl": {
    "h": 229.756,
    "s": 45.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39447,
    "c": 0.1149,
    "h": 271.5
  },
  "luminance": 0.05847
}

Semantic roles & 50–950 ramp

primary

#313F83

secondary

#AEA162

accent

#BF53D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #313F83

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

Preview Lab → · Contrast checker → · Palette generator →