#3137BE#3137BE

#3137BE is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.2% C 0.205 H 272.0°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#3137BE
RGB	rgb(49, 55, 190)
HSL	hsl(237, 59%, 47%)
HSV	hsv(237, 74%, 75%)
CMYK	cmyk(74.2%, 71.1%, 0%, 25.5%)
CIE-LAB	lab(32.04, 43.24, -70.91)
CIE-LCH	lch(32.04, 83.05, 301.38°)
OKLab	oklab(43.21% 0.0072 -0.2052)
OKLCH	oklch(43.21% 0.205 272)
XYZ	xyz(11.9239, 7.1018, 49.4476)
Luminance	0.0710 (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

#3137BE #BEB831

analogous

#317EBE #3137BE #7231BE

triadic

#3137BE #BE3137 #37BE31

tetradic

#3137BE #BE317E #BEB831 #31BE72

square

#3137BE #BE317E #BEB831 #31BE72

split-complementary

#3137BE #BE7231 #7EBE31

monochromatic

#181B5D #24298D #3137BE #585DD4 #898DE1

Accessibility & contrast

On white

8.68

#3137BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3137BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137BE

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137BE	#FFFFFF	#000000	##FFFFFF
##3137BE	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C2

Deuteranopia (green-blind)

#0045BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3137be;
/* rgb */ color: rgb(49, 55, 190);
/* oklch */ color: oklch(43.2% 0.205 272.0);

Tailwind

colors: {
  custom: {
    50: '#7f6fd3',
    500: '#3137be',
    950: '#000000',
  },
}

SCSS

$custom: #3137be;
$custom-light: #7f6fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3137be",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 237.447,
    "s": 58.996,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43214,
    "c": 0.20531,
    "h": 272
  },
  "luminance": 0.07103
}

Semantic roles & 50–950 ramp

primary

#3137BE

secondary

#CAC780

accent

#DC46E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3137BE

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

Preview Lab → · Contrast checker → · Palette generator →