#313FAD#313FAD

#313FAD is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.174 H 271.3°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#313FAD
RGB	rgb(49, 63, 173)
HSL	hsl(233, 56%, 44%)
HSV	hsv(233, 72%, 68%)
CMYK	cmyk(71.7%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(32.31, 32.31, -60.38)
CIE-LCH	lch(32.31, 68.48, 298.16°)
OKLab	oklab(42.93% 0.0039 -0.1744)
OKLCH	oklch(42.93% 0.174 271.3)
XYZ	xyz(10.5844, 7.2241, 40.3636)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.22

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313FAD #AD9F31

analogous

#317DAD #313FAD #6131AD

triadic

#313FAD #AD313F #3FAD31

tetradic

#313FAD #AD317D #AD9F31 #31AD61

square

#313FAD #AD317D #AD9F31 #31AD61

split-complementary

#313FAD #AD6131 #7DAD31

monochromatic

#161C4E #232E7D #313FAD #4E5DCD #7E88DA

Accessibility & contrast

On white

8.59

#313FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#313FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313FAD

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313FAD	#FFFFFF	#000000	##FFFFFF
##313FAD	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B1

Deuteranopia (green-blind)

#0046AB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313fad;
/* rgb */ color: rgb(49, 63, 173);
/* oklch */ color: oklch(42.9% 0.174 271.3);

Tailwind

colors: {
  custom: {
    50: '#7a74c6',
    500: '#313fad',
    950: '#000000',
  },
}

SCSS

$custom: #313fad;
$custom-light: #7a74c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313fad",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 233.226,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42934,
    "c": 0.17441,
    "h": 271.3
  },
  "luminance": 0.07225
}

Semantic roles & 50–950 ramp

primary

#313FAD

secondary

#C3BB77

accent

#CE49DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313FAD

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

Preview Lab → · Contrast checker → · Palette generator →