#313CA3#313CA3

#313CA3 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.165 H 272.3°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#313CA3
RGB	rgb(49, 60, 163)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 64%)
CMYK	cmyk(69.9%, 63.2%, 0%, 36.1%)
CIE-LAB	lab(30.71, 30.64, -57.00)
CIE-LCH	lch(30.71, 64.71, 298.26°)
OKLab	oklab(41.49% 0.0066 -0.1645)
OKLCH	oklch(41.49% 0.165 272.3)
XYZ	xyz(9.4911, 6.5281, 35.4031)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CA3 #A39831

analogous

#3175A3 #313CA3 #5F31A3

triadic

#313CA3 #A3313C #3CA331

tetradic

#313CA3 #A33175 #A39831 #31A35F

square

#313CA3 #A33175 #A39831 #31A35F

split-complementary

#313CA3 #A35F31 #75A331

monochromatic

#151945 #232B74 #313CA3 #4955C8 #7881D6

Accessibility & contrast

On white

9.11

#313CA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313CA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CA3

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CA3	#FFFFFF	#000000	##FFFFFF
##313CA3	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0043A1

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ca3;
/* rgb */ color: rgb(49, 60, 163);
/* oklch */ color: oklch(41.5% 0.165 272.3);

Tailwind

colors: {
  custom: {
    50: '#7871bf',
    500: '#313ca3',
    950: '#000000',
  },
}

SCSS

$custom: #313ca3;
$custom-light: #7871bf;
$custom-dark: #000000;

JSON

{
  "hex": "#313ca3",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 163
  },
  "hsl": {
    "h": 234.211,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41489,
    "c": 0.16462,
    "h": 272.3
  },
  "luminance": 0.06529
}

Semantic roles & 50–950 ramp

primary

#313CA3

secondary

#BFB771

accent

#CF4BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313CA3

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

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