#31358C#31358C

#31358C is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.1% C 0.142 H 275.4°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#31358C
RGB	rgb(49, 53, 140)
HSL	hsl(237, 48%, 37%)
HSV	hsv(237, 65%, 55%)
CMYK	cmyk(65%, 62.1%, 0%, 45.1%)
CIE-LAB	lab(27.00, 26.94, -49.00)
CIE-LCH	lch(27.00, 55.91, 298.80°)
OKLab	oklab(38.15% 0.0133 -0.1411)
OKLCH	oklch(38.15% 0.142 275.4)
XYZ	xyz(7.2718, 5.0920, 25.4055)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31358C #8C8831

analogous

#31628C #31358C #5B318C

triadic

#31358C #8C3135 #358C31

tetradic

#31358C #8C3162 #8C8831 #318C5B

square

#31358C #8C3162 #8C8831 #318C5B

split-complementary

#31358C #8C5B31 #628C31

monochromatic

#111331 #21245F #31358C #4146B9 #6C70CC

Accessibility & contrast

On white

10.40

#31358C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#31358C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31358C

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31358C	#FFFFFF	#000000	##FFFFFF
##31358C	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448F

Deuteranopia (green-blind)

#003C8A

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31358c;
/* rgb */ color: rgb(49, 53, 140);
/* oklch */ color: oklch(38.1% 0.142 275.4);

Tailwind

colors: {
  custom: {
    50: '#746cae',
    500: '#31358c',
    950: '#000000',
  },
}

SCSS

$custom: #31358c;
$custom-light: #746cae;
$custom-dark: #000000;

JSON

{
  "hex": "#31358c",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 140
  },
  "hsl": {
    "h": 237.363,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.3815,
    "c": 0.14169,
    "h": 275.4
  },
  "luminance": 0.05093
}

Semantic roles & 50–950 ramp

primary

#31358C

secondary

#B3B066

accent

#D250D8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31358C

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

Preview Lab → · Contrast checker → · Palette generator →