#31518D#31518D

#31518D is a dark, moderate blue. Relative luminance 0.085; OKLCH L 44.2% C 0.106 H 261.8°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#31518D
RGB	rgb(49, 81, 141)
HSL	hsl(219, 48%, 37%)
HSV	hsv(219, 65%, 55%)
CMYK	cmyk(65.2%, 42.6%, 0%, 44.7%)
CIE-LAB	lab(34.92, 8.53, -36.84)
CIE-LCH	lch(34.92, 37.81, 283.03°)
OKLab	oklab(44.17% -0.015 -0.1049)
OKLCH	oklch(44.17% 0.106 261.8)
XYZ	xyz(9.0151, 8.4601, 26.3520)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31518D #8D6D31

analogous

#317F8D #31518D #3F318D

triadic

#31518D #8D3151 #518D31

tetradic

#31518D #8D317F #8D6D31 #318D3F

square

#31518D #8D317F #8D6D31 #318D3F

split-complementary

#31518D #8D3F31 #7F8D31

monochromatic

#111D32 #213760 #31518D #416BBA #6C8ECC

Accessibility & contrast

On white

7.80

#31518D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#31518D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31518D

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31518D	#FFFFFF	#000000	##FFFFFF
##31518D	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36578F

Deuteranopia (green-blind)

#284E8C

Tritanopia (blue-blind)

#005F68

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #31518d;
/* rgb */ color: rgb(49, 81, 141);
/* oklch */ color: oklch(44.2% 0.106 261.8);

Tailwind

colors: {
  custom: {
    50: '#7381af',
    500: '#31518d',
    950: '#000000',
  },
}

SCSS

$custom: #31518d;
$custom-light: #7381af;
$custom-dark: #000000;

JSON

{
  "hex": "#31518d",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 141
  },
  "hsl": {
    "h": 219.13,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44171,
    "c": 0.10601,
    "h": 261.8
  },
  "luminance": 0.08461
}

Semantic roles & 50–950 ramp

primary

#31518D

secondary

#B49966

accent

#A950D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #31518D

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

Preview Lab → · Contrast checker → · Palette generator →