#313D75#313D75

#313D75 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.096 H 272.0°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#313D75
RGB	rgb(49, 61, 117)
HSL	hsl(229, 41%, 33%)
HSV	hsv(229, 58%, 46%)
CMYK	cmyk(58.1%, 47.9%, 0%, 54.1%)
CIE-LAB	lab(27.50, 13.17, -33.78)
CIE-LCH	lch(27.50, 36.25, 291.30°)
OKLab	oklab(37.99% 0.0034 -0.0962)
OKLCH	oklch(37.99% 0.096 272)
XYZ	xyz(6.1452, 5.2744, 17.5204)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D75 #756931

analogous

#315F75 #313D75 #473175

triadic

#313D75 #75313D #3D7531

tetradic

#313D75 #75315F #756931 #317547

square

#313D75 #75315F #756931 #317547

split-complementary

#313D75 #754731 #5F7531

monochromatic

#0D101F #1F274A #313D75 #4353A0 #6373BE

Accessibility & contrast

On white

10.22

#313D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#313D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D75

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D75	#FFFFFF	#000000	##FFFFFF
##313D75	1.00	10.22	2.06	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244477

Deuteranopia (green-blind)

#1B3E74

Tritanopia (blue-blind)

#0A4953

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313d75;
/* rgb */ color: rgb(49, 61, 117);
/* oklch */ color: oklch(38.0% 0.096 272.0);

Tailwind

colors: {
  custom: {
    50: '#6f729d',
    500: '#313d75',
    950: '#000000',
  },
}

SCSS

$custom: #313d75;
$custom-light: #6f729d;
$custom-dark: #000000;

JSON

{
  "hex": "#313d75",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 117
  },
  "hsl": {
    "h": 229.412,
    "s": 40.964,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37991,
    "c": 0.09628,
    "h": 272
  },
  "luminance": 0.05275
}

Semantic roles & 50–950 ramp

primary

#313D75

secondary

#A5985D

accent

#BB57D1

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313D75

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

Preview Lab → · Contrast checker → · Palette generator →