#31478C#31478C

#31478C is a dark, moderate blue. Relative luminance 0.071; OKLCH L 41.9% C 0.117 H 267.8°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#31478C
RGB	rgb(49, 71, 140)
HSL	hsl(225, 48%, 37%)
HSV	hsv(225, 65%, 55%)
CMYK	cmyk(65%, 49.3%, 0%, 45.1%)
CIE-LAB	lab(31.93, 14.82, -41.02)
CIE-LCH	lch(31.93, 43.62, 289.87°)
OKLab	oklab(41.85% -0.0045 -0.1174)
OKLCH	oklch(41.85% 0.117 267.8)
XYZ	xyz(8.2519, 7.0522, 25.7322)
Luminance	0.0705 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31478C #8C7631

analogous

#31748C #31478C #49318C

triadic

#31478C #8C3147 #478C31

tetradic

#31478C #8C3174 #8C7631 #318C49

square

#31478C #8C3174 #8C7631 #318C49

split-complementary

#31478C #8C4931 #748C31

monochromatic

#111931 #21305F #31478C #415EB9 #6C83CC

Accessibility & contrast

On white

8.71

#31478C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#31478C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31478C

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31478C	#FFFFFF	#000000	##FFFFFF
##31478C	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244F8F

Deuteranopia (green-blind)

#11478B

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #31478c;
/* rgb */ color: rgb(49, 71, 140);
/* oklch */ color: oklch(41.9% 0.117 267.8);

Tailwind

colors: {
  custom: {
    50: '#7379ae',
    500: '#31478c',
    950: '#000000',
  },
}

SCSS

$custom: #31478c;
$custom-light: #7379ae;
$custom-dark: #000000;

JSON

{
  "hex": "#31478c",
  "rgb": {
    "r": 49,
    "g": 71,
    "b": 140
  },
  "hsl": {
    "h": 225.495,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.4185,
    "c": 0.11747,
    "h": 267.8
  },
  "luminance": 0.07053
}

Semantic roles & 50–950 ramp

primary

#31478C

secondary

#B3A066

accent

#B750D8

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #31478C

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

Preview Lab → · Contrast checker → · Palette generator →