#3137A1#3137A1

#3137A1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.168 H 273.6°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#3137A1
RGB	rgb(49, 55, 161)
HSL	hsl(237, 53%, 41%)
HSV	hsv(237, 70%, 63%)
CMYK	cmyk(69.6%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(29.31, 33.15, -58.08)
CIE-LCH	lch(29.31, 66.88, 299.72°)
OKLab	oklab(40.41% 0.0104 -0.1677)
OKLCH	oklch(40.41% 0.168 273.6)
XYZ	xyz(9.0637, 5.9577, 34.3836)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137A1 #A19B31

analogous

#316FA1 #3137A1 #6331A1

triadic

#3137A1 #A13137 #37A131

tetradic

#3137A1 #A1316F #A19B31 #31A163

square

#3137A1 #A1316F #A19B31 #31A163

split-complementary

#3137A1 #A16331 #6FA131

monochromatic

#141743 #232772 #3137A1 #484FC7 #777CD6

Accessibility & contrast

On white

9.58

#3137A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#3137A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137A1

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137A1	#FFFFFF	#000000	##FFFFFF
##3137A1	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3137a1;
/* rgb */ color: rgb(49, 55, 161);
/* oklch */ color: oklch(40.4% 0.168 273.6);

Tailwind

colors: {
  custom: {
    50: '#786ebe',
    500: '#3137a1',
    950: '#000000',
  },
}

SCSS

$custom: #3137a1;
$custom-light: #786ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#3137a1",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 236.786,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.40407,
    "c": 0.16803,
    "h": 273.6
  },
  "luminance": 0.05959
}

Semantic roles & 50–950 ramp

primary

#3137A1

secondary

#BEBA70

accent

#D54BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3137A1

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

Preview Lab → · Contrast checker → · Palette generator →