#313C73#313C73

#313C73 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.095 H 272.6°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#313C73
RGB	rgb(49, 60, 115)
HSL	hsl(230, 40%, 32%)
HSV	hsv(230, 57%, 45%)
CMYK	cmyk(57.4%, 47.8%, 0%, 54.9%)
CIE-LAB	lab(27.08, 13.13, -33.19)
CIE-LCH	lch(27.08, 35.69, 291.59°)
OKLab	oklab(37.63% 0.0043 -0.0945)
OKLCH	oklch(37.63% 0.095 272.6)
XYZ	xyz(5.9760, 5.1221, 16.8901)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C73 #736831

analogous

#315D73 #313C73 #473173

triadic

#313C73 #73313C #3C7331

tetradic

#313C73 #73315D #736831 #317347

square

#313C73 #73315D #736831 #317347

split-complementary

#313C73 #734731 #5D7331

monochromatic

#0C0F1D #1F2648 #313C73 #43529E #6271BC

Accessibility & contrast

On white

10.37

#313C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#313C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C73

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C73	#FFFFFF	#000000	##FFFFFF
##313C73	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#1B3D72

Tritanopia (blue-blind)

#0E4852

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313c73;
/* rgb */ color: rgb(49, 60, 115);
/* oklch */ color: oklch(37.6% 0.095 272.6);

Tailwind

colors: {
  custom: {
    50: '#6f719c',
    500: '#313c73',
    950: '#000000',
  },
}

SCSS

$custom: #313c73;
$custom-light: #6f719c;
$custom-dark: #000000;

JSON

{
  "hex": "#313c73",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 115
  },
  "hsl": {
    "h": 230,
    "s": 40.244,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37627,
    "c": 0.09459,
    "h": 272.6
  },
  "luminance": 0.05122
}

Semantic roles & 50–950 ramp

primary

#313C73

secondary

#A4985C

accent

#BC58D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313C73

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

Preview Lab → · Contrast checker → · Palette generator →