#3137A5#3137A5

#3137A5 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.8% C 0.173 H 273.3°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#3137A5
RGB	rgb(49, 55, 165)
HSL	hsl(237, 54%, 42%)
HSV	hsv(237, 70%, 65%)
CMYK	cmyk(70.3%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(29.67, 34.57, -59.91)
CIE-LCH	lch(29.67, 69.17, 299.99°)
OKLab	oklab(40.78% 0.0101 -0.173)
OKLCH	oklch(40.78% 0.173 273.3)
XYZ	xyz(9.4221, 6.1011, 36.2711)
Luminance	0.0610 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.71

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137A5 #A59F31

analogous

#3171A5 #3137A5 #6531A5

triadic

#3137A5 #A53137 #37A531

tetradic

#3137A5 #A53171 #A59F31 #31A565

square

#3137A5 #A53171 #A59F31 #31A565

split-complementary

#3137A5 #A56531 #71A531

monochromatic

#151847 #232776 #3137A5 #4A51C9 #797ED7

Accessibility & contrast

On white

9.46

#3137A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3137A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137A5

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137A5	#FFFFFF	#000000	##FFFFFF
##3137A5	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA8

Deuteranopia (green-blind)

#0041A3

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3137a5;
/* rgb */ color: rgb(49, 55, 165);
/* oklch */ color: oklch(40.8% 0.173 273.3);

Tailwind

colors: {
  custom: {
    50: '#796ec1',
    500: '#3137a5',
    950: '#000000',
  },
}

SCSS

$custom: #3137a5;
$custom-light: #796ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#3137a5",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 236.897,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4078,
    "c": 0.17334,
    "h": 273.3
  },
  "luminance": 0.06102
}

Semantic roles & 50–950 ramp

primary

#3137A5

secondary

#C0BC72

accent

#D64ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3137A5

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

Preview Lab → · Contrast checker → · Palette generator →