#31348B#31348B

#31348B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.9% C 0.142 H 275.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#31348B
RGB	rgb(49, 52, 139)
HSL	hsl(238, 48%, 37%)
HSV	hsv(238, 65%, 55%)
CMYK	cmyk(64.7%, 62.6%, 0%, 45.5%)
CIE-LAB	lab(26.66, 27.24, -48.93)
CIE-LCH	lch(26.66, 56.00, 299.11°)
OKLab	oklab(37.87% 0.0143 -0.1409)
OKLCH	oklch(37.87% 0.142 275.8)
XYZ	xyz(7.1533, 4.9724, 25.0039)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31348B #8B8831

analogous

#31618B #31348B #5B318B

triadic

#31348B #8B3134 #348B31

tetradic

#31348B #8B3161 #8B8831 #318B5B

square

#31348B #8B3161 #8B8831 #318B5B

split-complementary

#31348B #8B5B31 #618B31

monochromatic

#111231 #21235E #31348B #4145B8 #6B6FCB

Accessibility & contrast

On white

10.53

#31348B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#31348B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31348B

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31348B	#FFFFFF	#000000	##FFFFFF
##31348B	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31348b;
/* rgb */ color: rgb(49, 52, 139);
/* oklch */ color: oklch(37.9% 0.142 275.8);

Tailwind

colors: {
  custom: {
    50: '#746bae',
    500: '#31348b',
    950: '#000000',
  },
}

SCSS

$custom: #31348b;
$custom-light: #746bae;
$custom-dark: #000000;

JSON

{
  "hex": "#31348b",
  "rgb": {
    "r": 49,
    "g": 52,
    "b": 139
  },
  "hsl": {
    "h": 238,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37873,
    "c": 0.14159,
    "h": 275.8
  },
  "luminance": 0.04973
}

Semantic roles & 50–950 ramp

primary

#31348B

secondary

#B2B065

accent

#D350D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #31348B

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

Preview Lab → · Contrast checker → · Palette generator →