#313F82#313F82

#313F82 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.4% C 0.113 H 271.4°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#313F82
RGB	rgb(49, 63, 130)
HSL	hsl(230, 45%, 35%)
HSV	hsv(230, 62%, 51%)
CMYK	cmyk(62.3%, 51.5%, 0%, 49%)
CIE-LAB	lab(28.95, 16.54, -39.62)
CIE-LCH	lch(28.95, 42.93, 292.67°)
OKLab	oklab(39.37% 0.0028 -0.1133)
OKLCH	oklch(39.37% 0.113 271.4)
XYZ	xyz(7.0721, 5.8191, 21.8653)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F82 #827431

analogous

#316782 #313F82 #4C3182

triadic

#313F82 #82313F #3F8231

tetradic

#313F82 #823167 #827431 #31824C

square

#313F82 #823167 #827431 #31824C

split-complementary

#313F82 #824C31 #678231

monochromatic

#0F1429 #202956 #313F82 #4255AE #6878C6

Accessibility & contrast

On white

9.70

#313F82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#313F82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F82

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F82	#FFFFFF	#000000	##FFFFFF
##313F82	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4884

Deuteranopia (green-blind)

#0A4181

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313f82;
/* rgb */ color: rgb(49, 63, 130);
/* oklch */ color: oklch(39.4% 0.113 271.4);

Tailwind

colors: {
  custom: {
    50: '#7173a7',
    500: '#313f82',
    950: '#000000',
  },
}

SCSS

$custom: #313f82;
$custom-light: #7173a7;
$custom-dark: #000000;

JSON

{
  "hex": "#313f82",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 130
  },
  "hsl": {
    "h": 229.63,
    "s": 45.251,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39372,
    "c": 0.11338,
    "h": 271.4
  },
  "luminance": 0.0582
}

Semantic roles & 50–950 ramp

primary

#313F82

secondary

#ADA062

accent

#BE53D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #313F82

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

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