#313A5B#313A5B

#313A5B is a dark, muted blue. Relative luminance 0.044; OKLCH L 35.6% C 0.059 H 271.5°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#313A5B
RGB	rgb(49, 58, 91)
HSL	hsl(227, 30%, 27%)
HSV	hsv(227, 46%, 36%)
CMYK	cmyk(46.2%, 36.3%, 0%, 64.3%)
CIE-LAB	lab(25.06, 6.12, -20.94)
CIE-LCH	lch(25.06, 21.82, 286.30°)
OKLab	oklab(35.61% 0.0016 -0.0587)
OKLCH	oklch(35.61% 0.059 271.5)
XYZ	xyz(4.6674, 4.4342, 10.5054)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A5B #5B5231

analogous

#314F5B #313A5B #3D315B

triadic

#313A5B #5B313A #3A5B31

tetradic

#313A5B #5B314F #5B5231 #315B3D

square

#313A5B #5B314F #5B5231 #315B3D

split-complementary

#313A5B #5B3D31 #4F5B31

monochromatic

#0B0D14 #1C2133 #313A5B #465383 #5E6EA8

Accessibility & contrast

On white

11.13

#313A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#313A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A5B

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A5B	#FFFFFF	#000000	##FFFFFF
##313A5B	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5C

Deuteranopia (green-blind)

#2B3A5A

Tritanopia (blue-blind)

#234146

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #313a5b;
/* rgb */ color: rgb(49, 58, 91);
/* oklch */ color: oklch(35.6% 0.059 271.5);

Tailwind

colors: {
  custom: {
    50: '#6b7089',
    500: '#313a5b',
    950: '#000000',
  },
}

SCSS

$custom: #313a5b;
$custom-light: #6b7089;
$custom-dark: #000000;

JSON

{
  "hex": "#313a5b",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 227.143,
    "s": 30,
    "l": 27.451
  },
  "oklch": {
    "l": 0.35613,
    "c": 0.05876,
    "h": 271.5
  },
  "luminance": 0.04434
}

Semantic roles & 50–950 ramp

primary

#313A5B

secondary

#8C825C

accent

#B162C6

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#07070B

muted

#7A7A7C

Preview Lab

Preview with #313A5B

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

Preview Lab → · Contrast checker → · Palette generator →