#313D72#313D72

#313D72 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.092 H 271.8°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#313D72
RGB	rgb(49, 61, 114)
HSL	hsl(229, 40%, 32%)
HSV	hsv(229, 57%, 45%)
CMYK	cmyk(57%, 46.5%, 0%, 55.3%)
CIE-LAB	lab(27.31, 12.09, -32.18)
CIE-LCH	lch(27.31, 34.38, 290.59°)
OKLab	oklab(37.78% 0.0028 -0.0915)
OKLCH	oklch(37.78% 0.092 271.8)
XYZ	xyz(5.9716, 5.2049, 16.6063)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D72 #726631

analogous

#315E72 #313D72 #463172

triadic

#313D72 #72313D #3D7231

tetradic

#313D72 #72315E #726631 #317246

square

#313D72 #72315E #726631 #317246

split-complementary

#313D72 #724631 #5E7231

monochromatic

#0C0F1C #1F2647 #313D72 #43549D #6272BB

Accessibility & contrast

On white

10.29

#313D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#313D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D72

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D72	#FFFFFF	#000000	##FFFFFF
##313D72	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264374

Deuteranopia (green-blind)

#1E3E71

Tritanopia (blue-blind)

#0F4952

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313d72;
/* rgb */ color: rgb(49, 61, 114);
/* oklch */ color: oklch(37.8% 0.092 271.8);

Tailwind

colors: {
  custom: {
    50: '#6f729b',
    500: '#313d72',
    950: '#000000',
  },
}

SCSS

$custom: #313d72;
$custom-light: #6f729b;
$custom-dark: #000000;

JSON

{
  "hex": "#313d72",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 114
  },
  "hsl": {
    "h": 228.923,
    "s": 39.877,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37783,
    "c": 0.09157,
    "h": 271.8
  },
  "luminance": 0.05205
}

Semantic roles & 50–950 ramp

primary

#313D72

secondary

#A3965C

accent

#BA58D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313D72

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

Preview Lab → · Contrast checker → · Palette generator →