#3137AF#3137AF

#3137AF is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.186 H 272.8°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#3137AF
RGB	rgb(49, 55, 175)
HSL	hsl(237, 56%, 44%)
HSV	hsv(237, 72%, 69%)
CMYK	cmyk(72%, 68.6%, 0%, 31.4%)
CIE-LAB	lab(30.59, 38.08, -64.39)
CIE-LCH	lch(30.59, 74.81, 300.60°)
OKLab	oklab(41.74% 0.0091 -0.1862)
OKLCH	oklch(41.74% 0.186 272.8)
XYZ	xyz(10.3681, 6.4795, 41.2534)
Luminance	0.0648 (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

#3137AF #AFA931

analogous

#3176AF #3137AF #6A31AF

triadic

#3137AF #AF3137 #37AF31

tetradic

#3137AF #AF3176 #AFA931 #31AF6A

square

#3137AF #AF3176 #AFA931 #31AF6A

split-complementary

#3137AF #AF6A31 #76AF31

monochromatic

#16194F #24287F #3137AF #4F55CE #7F84DB

Accessibility & contrast

On white

9.15

#3137AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3137AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137AF

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137AF	#FFFFFF	#000000	##FFFFFF
##3137AF	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB3

Deuteranopia (green-blind)

#0042AD

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3137af;
/* rgb */ color: rgb(49, 55, 175);
/* oklch */ color: oklch(41.7% 0.186 272.8);

Tailwind

colors: {
  custom: {
    50: '#7c6ec8',
    500: '#3137af',
    950: '#000000',
  },
}

SCSS

$custom: #3137af;
$custom-light: #7c6ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#3137af",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 175
  },
  "hsl": {
    "h": 237.143,
    "s": 56.25,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41735,
    "c": 0.18638,
    "h": 272.8
  },
  "luminance": 0.0648
}

Semantic roles & 50–950 ramp

primary

#3137AF

secondary

#C4C078

accent

#D848E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3137AF

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

Preview Lab → · Contrast checker → · Palette generator →