#31357F#31357F

#31357F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.123 H 276.3°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#31357F
RGB	rgb(49, 53, 127)
HSL	hsl(237, 44%, 35%)
HSV	hsv(237, 61%, 50%)
CMYK	cmyk(61.4%, 58.3%, 0%, 50.2%)
CIE-LAB	lab(25.95, 22.25, -42.58)
CIE-LCH	lch(25.95, 48.04, 297.59°)
OKLab	oklab(37.05% 0.0134 -0.1222)
OKLCH	oklch(37.05% 0.123 276.3)
XYZ	xyz(6.3693, 4.7310, 20.6521)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31357F #7F7B31

analogous

#315C7F #31357F #54317F

triadic

#31357F #7F3135 #357F31

tetradic

#31357F #7F315C #7F7B31 #317F54

square

#31357F #7F315C #7F7B31 #317F54

split-complementary

#31357F #7F5431 #5C7F31

monochromatic

#0F1027 #202353 #31357F #4247AB #666BC4

Accessibility & contrast

On white

10.79

#31357F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#31357F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31357F

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31357F	#FFFFFF	#000000	##FFFFFF
##31357F	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004182

Deuteranopia (green-blind)

#003A7D

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #31357f;
/* rgb */ color: rgb(49, 53, 127);
/* oklch */ color: oklch(37.0% 0.123 276.3);

Tailwind

colors: {
  custom: {
    50: '#716ca5',
    500: '#31357f',
    950: '#000000',
  },
}

SCSS

$custom: #31357f;
$custom-light: #716ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#31357f",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 127
  },
  "hsl": {
    "h": 236.923,
    "s": 44.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.3705,
    "c": 0.12291,
    "h": 276.3
  },
  "luminance": 0.04731
}

Semantic roles & 50–950 ramp

primary

#31357F

secondary

#ABA860

accent

#CD54D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31357F

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

Preview Lab → · Contrast checker → · Palette generator →