#313A75#313A75

#313A75 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.101 H 274.0°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#313A75
RGB	rgb(49, 58, 117)
HSL	hsl(232, 41%, 33%)
HSV	hsv(232, 58%, 46%)
CMYK	cmyk(58.1%, 50.4%, 0%, 54.1%)
CIE-LAB	lab(26.63, 15.22, -35.18)
CIE-LCH	lch(26.63, 38.33, 293.40°)
OKLab	oklab(37.33% 0.007 -0.1004)
OKLCH	oklch(37.33% 0.101 274)
XYZ	xyz(5.9895, 4.9630, 17.4685)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A75 #756C31

analogous

#315C75 #313A75 #4A3175

triadic

#313A75 #75313A #3A7531

tetradic

#313A75 #75315C #756C31 #31754A

square

#313A75 #75315C #756C31 #31754A

split-complementary

#313A75 #754A31 #5C7531

monochromatic

#0D0F1F #1F254A #313A75 #434FA0 #636FBE

Accessibility & contrast

On white

10.54

#313A75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#313A75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A75

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A75	#FFFFFF	#000000	##FFFFFF
##313A75	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4277

Deuteranopia (green-blind)

#143C74

Tritanopia (blue-blind)

#0C4752

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #313a75;
/* rgb */ color: rgb(49, 58, 117);
/* oklch */ color: oklch(37.3% 0.101 274.0);

Tailwind

colors: {
  custom: {
    50: '#6f6f9d',
    500: '#313a75',
    950: '#000000',
  },
}

SCSS

$custom: #313a75;
$custom-light: #6f6f9d;
$custom-dark: #000000;

JSON

{
  "hex": "#313a75",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 117
  },
  "hsl": {
    "h": 232.059,
    "s": 40.964,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37327,
    "c": 0.1006,
    "h": 274
  },
  "luminance": 0.04963
}

Semantic roles & 50–950 ramp

primary

#313A75

secondary

#A59B5D

accent

#C157D1

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313A75

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

Preview Lab → · Contrast checker → · Palette generator →