#313A79#313A79

#313A79 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.107 H 274.0°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#313A79
RGB	rgb(49, 58, 121)
HSL	hsl(233, 42%, 33%)
HSV	hsv(233, 60%, 47%)
CMYK	cmyk(59.5%, 52.1%, 0%, 52.5%)
CIE-LAB	lab(26.90, 16.67, -37.27)
CIE-LCH	lch(26.90, 40.83, 294.10°)
OKLab	oklab(37.62% 0.0075 -0.1065)
OKLCH	oklch(37.62% 0.107 274)
XYZ	xyz(6.2297, 5.0591, 18.7337)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A79 #797031

analogous

#315E79 #313A79 #4C3179

triadic

#313A79 #79313A #3A7931

tetradic

#313A79 #79315E #797031 #31794C

square

#313A79 #79315E #797031 #31794C

split-complementary

#313A79 #794C31 #5E7931

monochromatic

#0E1022 #1F254D #313A79 #434FA5 #6470C0

Accessibility & contrast

On white

10.44

#313A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#313A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A79

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A79	#FFFFFF	#000000	##FFFFFF
##313A79	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A437B

Deuteranopia (green-blind)

#0D3D78

Tritanopia (blue-blind)

#044853

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313a79;
/* rgb */ color: rgb(49, 58, 121);
/* oklch */ color: oklch(37.6% 0.107 274.0);

Tailwind

colors: {
  custom: {
    50: '#7070a0',
    500: '#313a79',
    950: '#000000',
  },
}

SCSS

$custom: #313a79;
$custom-light: #7070a0;
$custom-dark: #000000;

JSON

{
  "hex": "#313a79",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 121
  },
  "hsl": {
    "h": 232.5,
    "s": 42.353,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37622,
    "c": 0.10677,
    "h": 274
  },
  "luminance": 0.0506
}

Semantic roles & 50–950 ramp

primary

#313A79

secondary

#A89E5E

accent

#C356D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070F

muted

#7B7A7E

Preview Lab

Preview with #313A79

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

Preview Lab → · Contrast checker → · Palette generator →