#31488F#31488F

#31488F is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.3% C 0.121 H 267.6°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#31488F
RGB	rgb(49, 72, 143)
HSL	hsl(225, 49%, 38%)
HSV	hsv(225, 66%, 56%)
CMYK	cmyk(65.7%, 49.7%, 0%, 43.9%)
CIE-LAB	lab(32.41, 15.27, -42.08)
CIE-LCH	lch(32.41, 44.76, 289.94°)
OKLab	oklab(42.29% -0.0051 -0.1205)
OKLCH	oklch(42.29% 0.121 267.6)
XYZ	xyz(8.5402, 7.2701, 26.9345)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31488F #8F7831

analogous

#31778F #31488F #49318F

triadic

#31488F #8F3148 #488F31

tetradic

#31488F #8F3177 #8F7831 #318F49

square

#31488F #8F3177 #8F7831 #318F49

split-complementary

#31488F #8F4931 #778F31

monochromatic

#121A34 #213161 #31488F #415FBD #6D85CD

Accessibility & contrast

On white

8.56

#31488F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#31488F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31488F

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31488F	#FFFFFF	#000000	##FFFFFF
##31488F	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#235192

Deuteranopia (green-blind)

#0E488E

Tritanopia (blue-blind)

#005864

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #31488f;
/* rgb */ color: rgb(49, 72, 143);
/* oklch */ color: oklch(42.3% 0.121 267.6);

Tailwind

colors: {
  custom: {
    50: '#737ab0',
    500: '#31488f',
    950: '#000000',
  },
}

SCSS

$custom: #31488f;
$custom-light: #737ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#31488f",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 143
  },
  "hsl": {
    "h": 225.319,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.42286,
    "c": 0.12058,
    "h": 267.6
  },
  "luminance": 0.07271
}

Semantic roles & 50–950 ramp

primary

#31488F

secondary

#B5A267

accent

#B74FD9

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #31488F

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

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