#313DA6#313DA6

#313DA6 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.167 H 271.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#313DA6
RGB	rgb(49, 61, 166)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 65%)
CMYK	cmyk(70.5%, 63.3%, 0%, 34.9%)
CIE-LAB	lab(31.21, 31.08, -57.98)
CIE-LCH	lch(31.21, 65.78, 298.19°)
OKLab	oklab(41.94% 0.0057 -0.1673)
OKLCH	oklch(41.94% 0.167 271.9)
XYZ	xyz(9.8160, 6.7427, 36.8532)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA6 #A69A31

analogous

#3178A6 #313DA6 #5F31A6

triadic

#313DA6 #A6313D #3DA631

tetradic

#313DA6 #A63178 #A69A31 #31A65F

square

#313DA6 #A63178 #A69A31 #31A65F

split-complementary

#313DA6 #A65F31 #78A631

monochromatic

#151A47 #232C77 #313DA6 #4A58CA #7A83D8

Accessibility & contrast

On white

8.94

#313DA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#313DA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA6

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA6	#FFFFFF	#000000	##FFFFFF
##313DA6	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)

#004FA9

Deuteranopia (green-blind)

#0044A4

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313da6;
/* rgb */ color: rgb(49, 61, 166);
/* oklch */ color: oklch(41.9% 0.167 271.9);

Tailwind

colors: {
  custom: {
    50: '#7972c1',
    500: '#313da6',
    950: '#000000',
  },
}

SCSS

$custom: #313da6;
$custom-light: #7972c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313da6",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 166
  },
  "hsl": {
    "h": 233.846,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41941,
    "c": 0.16745,
    "h": 271.9
  },
  "luminance": 0.06744
}

Semantic roles & 50–950 ramp

primary

#313DA6

secondary

#C0B873

accent

#CF4ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA6

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

Preview Lab → · Contrast checker → · Palette generator →