#313EA3#313EA3

#313EA3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.162 H 271.8°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#313EA3
RGB	rgb(49, 62, 163)
HSL	hsl(233, 54%, 42%)
HSV	hsv(233, 70%, 64%)
CMYK	cmyk(69.9%, 62%, 0%, 36.1%)
CIE-LAB	lab(31.21, 29.34, -56.18)
CIE-LCH	lch(31.21, 63.38, 297.58°)
OKLab	oklab(41.86% 0.005 -0.162)
OKLCH	oklch(41.86% 0.162 271.8)
XYZ	xyz(9.5979, 6.7416, 35.4387)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA3 #A39631

analogous

#3177A3 #313EA3 #5D31A3

triadic

#313EA3 #A3313E #3EA331

tetradic

#313EA3 #A33177 #A39631 #31A35D

square

#313EA3 #A33177 #A39631 #31A35D

split-complementary

#313EA3 #A35D31 #77A331

monochromatic

#151A45 #232C74 #313EA3 #4957C8 #7883D6

Accessibility & contrast

On white

8.94

#313EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#313EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA3

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA3	#FFFFFF	#000000	##FFFFFF
##313EA3	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313ea3;
/* rgb */ color: rgb(49, 62, 163);
/* oklch */ color: oklch(41.9% 0.162 271.8);

Tailwind

colors: {
  custom: {
    50: '#7873bf',
    500: '#313ea3',
    950: '#000000',
  },
}

SCSS

$custom: #313ea3;
$custom-light: #7873bf;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea3",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 163
  },
  "hsl": {
    "h": 233.158,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4186,
    "c": 0.16213,
    "h": 271.8
  },
  "luminance": 0.06743
}

Semantic roles & 50–950 ramp

primary

#313EA3

secondary

#BFB671

accent

#CC4BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313EA3

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

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