#31508C#31508C

#31508C is a dark, moderate blue. Relative luminance 0.083; OKLCH L 43.9% C 0.106 H 262.3°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#31508C
RGB	rgb(49, 80, 140)
HSL	hsl(220, 48%, 37%)
HSV	hsv(220, 65%, 55%)
CMYK	cmyk(65%, 42.9%, 0%, 45.1%)
CIE-LAB	lab(34.57, 8.82, -36.80)
CIE-LCH	lch(34.57, 37.84, 283.47°)
OKLab	oklab(43.88% -0.0142 -0.1048)
OKLCH	oklch(43.88% 0.106 262.3)
XYZ	xyz(8.8672, 8.2829, 25.9373)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31508C #8C6D31

analogous

#317E8C #31508C #3F318C

triadic

#31508C #8C3150 #508C31

tetradic

#31508C #8C317E #8C6D31 #318C3F

square

#31508C #8C317E #8C6D31 #318C3F

split-complementary

#31508C #8C3F31 #7E8C31

monochromatic

#111C31 #21365F #31508C #416AB9 #6C8CCC

Accessibility & contrast

On white

7.90

#31508C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#31508C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31508C

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31508C	#FFFFFF	#000000	##FFFFFF
##31508C	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35568E

Deuteranopia (green-blind)

#274D8B

Tritanopia (blue-blind)

#005E67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #31508c;
/* rgb */ color: rgb(49, 80, 140);
/* oklch */ color: oklch(43.9% 0.106 262.3);

Tailwind

colors: {
  custom: {
    50: '#7380ae',
    500: '#31508c',
    950: '#000000',
  },
}

SCSS

$custom: #31508c;
$custom-light: #7380ae;
$custom-dark: #000000;

JSON

{
  "hex": "#31508c",
  "rgb": {
    "r": 49,
    "g": 80,
    "b": 140
  },
  "hsl": {
    "h": 219.56,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43875,
    "c": 0.10579,
    "h": 262.3
  },
  "luminance": 0.08284
}

Semantic roles & 50–950 ramp

primary

#31508C

secondary

#B39966

accent

#AA50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #31508C

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

Preview Lab → · Contrast checker → · Palette generator →