#313AA4#313AA4

#313AA4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.168 H 272.7°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#313AA4
RGB	rgb(49, 58, 164)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 64%)
CMYK	cmyk(70.1%, 64.6%, 0%, 35.7%)
CIE-LAB	lab(30.30, 32.30, -58.27)
CIE-LCH	lch(30.30, 66.62, 299.00°)
OKLab	oklab(41.22% 0.008 -0.1682)
OKLCH	oklch(41.22% 0.168 272.7)
XYZ	xyz(9.4783, 6.3585, 35.8426)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AA4 #A49B31

analogous

#3174A4 #313AA4 #6131A4

triadic

#313AA4 #A4313A #3AA431

tetradic

#313AA4 #A43174 #A49B31 #31A461

square

#313AA4 #A43174 #A49B31 #31A461

split-complementary

#313AA4 #A46131 #74A431

monochromatic

#151946 #232975 #313AA4 #4953C9 #7980D7

Accessibility & contrast

On white

9.24

#313AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#313AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AA4

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AA4	#FFFFFF	#000000	##FFFFFF
##313AA4	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313aa4;
/* rgb */ color: rgb(49, 58, 164);
/* oklch */ color: oklch(41.2% 0.168 272.7);

Tailwind

colors: {
  custom: {
    50: '#7970c0',
    500: '#313aa4',
    950: '#000000',
  },
}

SCSS

$custom: #313aa4;
$custom-light: #7970c0;
$custom-dark: #000000;

JSON

{
  "hex": "#313aa4",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 164
  },
  "hsl": {
    "h": 235.304,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41216,
    "c": 0.16842,
    "h": 272.7
  },
  "luminance": 0.06359
}

Semantic roles & 50–950 ramp

primary

#313AA4

secondary

#BFB972

accent

#D24ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313AA4

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

Preview Lab → · Contrast checker → · Palette generator →