#313D74#313D74

#313D74 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.095 H 271.9°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#313D74
RGB	rgb(49, 61, 116)
HSL	hsl(229, 41%, 32%)
HSV	hsv(229, 58%, 45%)
CMYK	cmyk(57.8%, 47.4%, 0%, 54.5%)
CIE-LAB	lab(27.44, 12.81, -33.25)
CIE-LCH	lch(27.44, 35.63, 291.07°)
OKLab	oklab(37.92% 0.0032 -0.0947)
OKLCH	oklch(37.92% 0.095 271.9)
XYZ	xyz(6.0867, 5.2510, 17.2124)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D74 #746831

analogous

#315E74 #313D74 #473174

triadic

#313D74 #74313D #3D7431

tetradic

#313D74 #74315E #746831 #317447

square

#313D74 #74315E #746831 #317447

split-complementary

#313D74 #744731 #5E7431

monochromatic

#0D101E #1F2649 #313D74 #43549F #6373BD

Accessibility & contrast

On white

10.24

#313D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#313D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D74

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D74	#FFFFFF	#000000	##FFFFFF
##313D74	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244476

Deuteranopia (green-blind)

#1C3E73

Tritanopia (blue-blind)

#0C4953

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313d74;
/* rgb */ color: rgb(49, 61, 116);
/* oklch */ color: oklch(37.9% 0.095 271.9);

Tailwind

colors: {
  custom: {
    50: '#6f729c',
    500: '#313d74',
    950: '#000000',
  },
}

SCSS

$custom: #313d74;
$custom-light: #6f729c;
$custom-dark: #000000;

JSON

{
  "hex": "#313d74",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 116
  },
  "hsl": {
    "h": 229.254,
    "s": 40.606,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37921,
    "c": 0.09471,
    "h": 271.9
  },
  "luminance": 0.05251
}

Semantic roles & 50–950 ramp

primary

#313D74

secondary

#A4975C

accent

#BB57D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313D74

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

Preview Lab → · Contrast checker → · Palette generator →