#31487B#31487B

#31487B is a dark, moderate blue. Relative luminance 0.067; OKLCH L 40.9% C 0.091 H 264.4°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#31487B
RGB	rgb(49, 72, 123)
HSL	hsl(221, 43%, 34%)
HSV	hsv(221, 60%, 48%)
CMYK	cmyk(60.2%, 41.5%, 0%, 51.8%)
CIE-LAB	lab(31.15, 7.90, -31.73)
CIE-LCH	lch(31.15, 32.70, 283.97°)
OKLab	oklab(40.91% -0.0088 -0.0901)
OKLCH	oklch(40.91% 0.091 264.4)
XYZ	xyz(7.1579, 6.7172, 19.6544)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31487B #7B6431

analogous

#316D7B #31487B #3F317B

triadic

#31487B #7B3148 #487B31

tetradic

#31487B #7B316D #7B6431 #317B3F

square

#31487B #7B316D #7B6431 #317B3F

split-complementary

#31487B #7B3F31 #6D7B31

monochromatic

#0E1523 #202E4F #31487B #4262A7 #6582C2

Accessibility & contrast

On white

8.96

#31487B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#31487B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31487B

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31487B	#FFFFFF	#000000	##FFFFFF
##31487B	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324D7D

Deuteranopia (green-blind)

#29467A

Tritanopia (blue-blind)

#00535B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #31487b;
/* rgb */ color: rgb(49, 72, 123);
/* oklch */ color: oklch(40.9% 0.091 264.4);

Tailwind

colors: {
  custom: {
    50: '#707aa1',
    500: '#31487b',
    950: '#000000',
  },
}

SCSS

$custom: #31487b;
$custom-light: #707aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#31487b",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 123
  },
  "hsl": {
    "h": 221.351,
    "s": 43.023,
    "l": 33.725
  },
  "oklch": {
    "l": 0.40913,
    "c": 0.09052,
    "h": 264.4
  },
  "luminance": 0.06718
}

Semantic roles & 50–950 ramp

primary

#31487B

secondary

#A9925F

accent

#AC55D3

background

#F7F7F9

surface

#EDEDF2

border

#C8C8CC

text

#08090F

muted

#7B7B7E

Preview Lab

Preview with #31487B

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

Preview Lab → · Contrast checker → · Palette generator →