#313E78#313E78

#313E78 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.4% C 0.100 H 271.5°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#313E78
RGB	rgb(49, 62, 120)
HSL	hsl(229, 42%, 33%)
HSV	hsv(229, 59%, 47%)
CMYK	cmyk(59.2%, 48.3%, 0%, 52.9%)
CIE-LAB	lab(27.99, 13.57, -34.89)
CIE-LCH	lch(27.99, 37.44, 291.25°)
OKLab	oklab(38.43% 0.0026 -0.0995)
OKLCH	oklch(38.43% 0.1 271.5)
XYZ	xyz(6.3783, 5.4538, 18.4822)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E78 #786B31

analogous

#316178 #313E78 #473178

triadic

#313E78 #78313E #3E7831

tetradic

#313E78 #783161 #786B31 #317847

square

#313E78 #783161 #786B31 #317847

split-complementary

#313E78 #784731 #617831

monochromatic

#0E1121 #1F284D #313E78 #4354A3 #6475C0

Accessibility & contrast

On white

10.04

#313E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#313E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E78

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E78	#FFFFFF	#000000	##FFFFFF
##313E78	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23457A

Deuteranopia (green-blind)

#193F77

Tritanopia (blue-blind)

#044B55

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313e78;
/* rgb */ color: rgb(49, 62, 120);
/* oklch */ color: oklch(38.4% 0.100 271.5);

Tailwind

colors: {
  custom: {
    50: '#70739f',
    500: '#313e78',
    950: '#000000',
  },
}

SCSS

$custom: #313e78;
$custom-light: #70739f;
$custom-dark: #000000;

JSON

{
  "hex": "#313e78",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 120
  },
  "hsl": {
    "h": 229.014,
    "s": 42.012,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38426,
    "c": 0.09951,
    "h": 271.5
  },
  "luminance": 0.05454
}

Semantic roles & 50–950 ramp

primary

#313E78

secondary

#A79A5E

accent

#BB56D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08080E

muted

#7B7B7E

Preview Lab

Preview with #313E78

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

Preview Lab → · Contrast checker → · Palette generator →