#31388F#31388F

#31388F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.142 H 274.2°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#31388F
RGB	rgb(49, 56, 143)
HSL	hsl(236, 49%, 38%)
HSV	hsv(236, 66%, 56%)
CMYK	cmyk(65.7%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(28.02, 26.03, -49.19)
CIE-LCH	lch(28.02, 55.65, 297.89°)
OKLab	oklab(38.98% 0.0105 -0.1416)
OKLCH	oklch(38.98% 0.142 274.2)
XYZ	xyz(7.6371, 5.4638, 26.6334)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31388F #8F8831

analogous

#31678F #31388F #59318F

triadic

#31388F #8F3138 #388F31

tetradic

#31388F #8F3167 #8F8831 #318F59

square

#31388F #8F3167 #8F8831 #318F59

split-complementary

#31388F #8F5931 #678F31

monochromatic

#121434 #212661 #31388F #414ABD #6D74CD

Accessibility & contrast

On white

10.03

#31388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#31388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31388F

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31388F	#FFFFFF	#000000	##FFFFFF
##31388F	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004692

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#004D5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31388f;
/* rgb */ color: rgb(49, 56, 143);
/* oklch */ color: oklch(39.0% 0.142 274.2);

Tailwind

colors: {
  custom: {
    50: '#746eb1',
    500: '#31388f',
    950: '#000000',
  },
}

SCSS

$custom: #31388f;
$custom-light: #746eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#31388f",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 235.532,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.38982,
    "c": 0.14198,
    "h": 274.2
  },
  "luminance": 0.05464
}

Semantic roles & 50–950 ramp

primary

#31388F

secondary

#B5AF67

accent

#CE4FD9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090711

muted

#7B7A80

Preview Lab

Preview with #31388F

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

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