#313B82#313B82

#313B82 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.5% C 0.119 H 273.4°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#313B82
RGB	rgb(49, 59, 130)
HSL	hsl(233, 45%, 35%)
HSV	hsv(233, 62%, 51%)
CMYK	cmyk(62.3%, 54.6%, 0%, 49%)
CIE-LAB	lab(27.82, 19.27, -41.43)
CIE-LCH	lch(27.82, 45.69, 294.94°)
OKLab	oklab(38.52% 0.0072 -0.1187)
OKLCH	oklch(38.52% 0.119 273.4)
XYZ	xyz(6.8585, 5.3921, 21.7941)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B82 #827831

analogous

#316382 #313B82 #503182

triadic

#313B82 #82313B #3B8231

tetradic

#313B82 #823163 #827831 #318250

square

#313B82 #823163 #827831 #318250

split-complementary

#313B82 #825031 #638231

monochromatic

#0F1329 #202756 #313B82 #424FAE #6873C6

Accessibility & contrast

On white

10.10

#313B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#313B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B82

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B82	#FFFFFF	#000000	##FFFFFF
##313B82	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104584

Deuteranopia (green-blind)

#003E81

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313b82;
/* rgb */ color: rgb(49, 59, 130);
/* oklch */ color: oklch(38.5% 0.119 273.4);

Tailwind

colors: {
  custom: {
    50: '#7270a7',
    500: '#313b82',
    950: '#000000',
  },
}

SCSS

$custom: #313b82;
$custom-light: #7270a7;
$custom-dark: #000000;

JSON

{
  "hex": "#313b82",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 130
  },
  "hsl": {
    "h": 232.593,
    "s": 45.251,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38521,
    "c": 0.11897,
    "h": 273.4
  },
  "luminance": 0.05393
}

Semantic roles & 50–950 ramp

primary

#313B82

secondary

#ADA462

accent

#C553D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313B82

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

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