#313AB0#313AB0

#313AB0 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.184 H 272.2°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#313AB0
RGB	rgb(49, 58, 176)
HSL	hsl(236, 56%, 44%)
HSV	hsv(236, 72%, 69%)
CMYK	cmyk(72.2%, 67%, 0%, 31%)
CIE-LAB	lab(31.38, 36.57, -63.70)
CIE-LCH	lch(31.38, 73.45, 299.86°)
OKLab	oklab(42.33% 0.0071 -0.1841)
OKLCH	oklch(42.33% 0.184 272.2)
XYZ	xyz(10.6135, 6.8126, 41.8215)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AB0 #B0A731

analogous

#317AB0 #313AB0 #6831B0

triadic

#313AB0 #B0313A #3AB031

tetradic

#313AB0 #B0317A #B0A731 #31B068

square

#313AB0 #B0317A #B0A731 #31B068

split-complementary

#313AB0 #B06831 #7AB031

monochromatic

#161A50 #242A80 #313AB0 #5059CE #8086DC

Accessibility & contrast

On white

8.89

#313AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#313AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AB0

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AB0	#FFFFFF	#000000	##FFFFFF
##313AB0	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ab0;
/* rgb */ color: rgb(49, 58, 176);
/* oklch */ color: oklch(42.3% 0.184 272.2);

Tailwind

colors: {
  custom: {
    50: '#7c70c9',
    500: '#313ab0',
    950: '#000000',
  },
}

SCSS

$custom: #313ab0;
$custom-light: #7c70c9;
$custom-dark: #000000;

JSON

{
  "hex": "#313ab0",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 176
  },
  "hsl": {
    "h": 235.748,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42333,
    "c": 0.18427,
    "h": 272.2
  },
  "luminance": 0.06814
}

Semantic roles & 50–950 ramp

primary

#313AB0

secondary

#C5BF78

accent

#D548E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AB0

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

Preview Lab → · Contrast checker → · Palette generator →