#313B76#313B76

#313B76 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.101 H 273.4°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#313B76
RGB	rgb(49, 59, 118)
HSL	hsl(231, 41%, 33%)
HSV	hsv(231, 58%, 46%)
CMYK	cmyk(58.5%, 50%, 0%, 53.7%)
CIE-LAB	lab(26.99, 14.90, -35.24)
CIE-LCH	lch(26.99, 38.26, 292.92°)
OKLab	oklab(37.62% 0.0059 -0.1005)
OKLCH	oklch(37.62% 0.101 273.4)
XYZ	xyz(6.0995, 5.0885, 17.7968)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B76 #766C31

analogous

#315E76 #313B76 #493176

triadic

#313B76 #76313B #3B7631

tetradic

#313B76 #76315E #766C31 #317649

square

#313B76 #76315E #766C31 #317649

split-complementary

#313B76 #764931 #5E7631

monochromatic

#0D1020 #1F254B #313B76 #4351A1 #6370BE

Accessibility & contrast

On white

10.41

#313B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#313B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B76

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B76	#FFFFFF	#000000	##FFFFFF
##313B76	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4378

Deuteranopia (green-blind)

#153D75

Tritanopia (blue-blind)

#094853

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313b76;
/* rgb */ color: rgb(49, 59, 118);
/* oklch */ color: oklch(37.6% 0.101 273.4);

Tailwind

colors: {
  custom: {
    50: '#6f709e',
    500: '#313b76',
    950: '#000000',
  },
}

SCSS

$custom: #313b76;
$custom-light: #6f709e;
$custom-dark: #000000;

JSON

{
  "hex": "#313b76",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 118
  },
  "hsl": {
    "h": 231.304,
    "s": 41.317,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37619,
    "c": 0.1007,
    "h": 273.4
  },
  "luminance": 0.05089
}

Semantic roles & 50–950 ramp

primary

#313B76

secondary

#A69B5D

accent

#BF57D1

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313B76

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

Preview Lab → · Contrast checker → · Palette generator →