#3137AD#3137AD

#3137AD is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.184 H 272.9°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#3137AD
RGB	rgb(49, 55, 173)
HSL	hsl(237, 56%, 44%)
HSV	hsv(237, 72%, 68%)
CMYK	cmyk(71.7%, 68.2%, 0%, 32.2%)
CIE-LAB	lab(30.40, 37.38, -63.50)
CIE-LCH	lch(30.40, 73.69, 300.48°)
OKLab	oklab(41.54% 0.0093 -0.1836)
OKLCH	oklch(41.54% 0.184 272.9)
XYZ	xyz(10.1731, 6.4015, 40.2265)
Luminance	0.0640 (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

#3137AD #ADA731

analogous

#3175AD #3137AD #6931AD

triadic

#3137AD #AD3137 #37AD31

tetradic

#3137AD #AD3175 #ADA731 #31AD69

square

#3137AD #AD3175 #ADA731 #31AD69

split-complementary

#3137AD #AD6931 #75AD31

monochromatic

#16194E #23287D #3137AD #4E54CD #7E82DA

Accessibility & contrast

On white

9.21

#3137AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3137AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137AD

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137AD	#FFFFFF	#000000	##FFFFFF
##3137AD	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3137ad;
/* rgb */ color: rgb(49, 55, 173);
/* oklch */ color: oklch(41.5% 0.184 272.9);

Tailwind

colors: {
  custom: {
    50: '#7b6ec7',
    500: '#3137ad',
    950: '#000000',
  },
}

SCSS

$custom: #3137ad;
$custom-light: #7b6ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#3137ad",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 173
  },
  "hsl": {
    "h": 237.097,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.41542,
    "c": 0.18381,
    "h": 272.9
  },
  "luminance": 0.06402
}

Semantic roles & 50–950 ramp

primary

#3137AD

secondary

#C3C077

accent

#D849DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3137AD

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

Preview Lab → · Contrast checker → · Palette generator →