#3137C0#3137C0

#3137C0 is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.4% C 0.208 H 271.9°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#3137C0
RGB	rgb(49, 55, 192)
HSL	hsl(237, 59%, 47%)
HSV	hsv(237, 74%, 75%)
CMYK	cmyk(74.5%, 71.4%, 0%, 24.7%)
CIE-LAB	lab(32.24, 43.92, -71.76)
CIE-LCH	lch(32.24, 84.13, 301.47°)
OKLab	oklab(43.42% 0.0069 -0.2077)
OKLCH	oklch(43.42% 0.208 271.9)
XYZ	xyz(12.1440, 7.1898, 50.6067)
Luminance	0.0719 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137C0 #C0BA31

analogous

#317EC0 #3137C0 #7331C0

triadic

#3137C0 #C03137 #37C031

tetradic

#3137C0 #C0317E #C0BA31 #31C073

square

#3137C0 #C0317E #C0BA31 #31C073

split-complementary

#3137C0 #C07331 #7EC031

monochromatic

#181B5E #25298F #3137C0 #595FD5 #8A8EE1

Accessibility & contrast

On white

8.61

#3137C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3137C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137C0

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137C0	#FFFFFF	#000000	##FFFFFF
##3137C0	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C4

Deuteranopia (green-blind)

#0045BE

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3137c0;
/* rgb */ color: rgb(49, 55, 192);
/* oklch */ color: oklch(43.4% 0.208 271.9);

Tailwind

colors: {
  custom: {
    50: '#806fd4',
    500: '#3137c0',
    950: '#000000',
  },
}

SCSS

$custom: #3137c0;
$custom-light: #806fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3137c0",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 192
  },
  "hsl": {
    "h": 237.483,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43415,
    "c": 0.20777,
    "h": 271.9
  },
  "luminance": 0.07191
}

Semantic roles & 50–950 ramp

primary

#3137C0

secondary

#CBC882

accent

#DC45E3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3137C0

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

Preview Lab → · Contrast checker → · Palette generator →