#3137A3#3137A3

#3137A3 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.171 H 273.5°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#3137A3
RGB	rgb(49, 55, 163)
HSL	hsl(237, 54%, 42%)
HSV	hsv(237, 70%, 64%)
CMYK	cmyk(69.9%, 66.3%, 0%, 36.1%)
CIE-LAB	lab(29.48, 33.86, -59.00)
CIE-LCH	lch(29.48, 68.02, 299.85°)
OKLab	oklab(40.59% 0.0103 -0.1704)
OKLCH	oklch(40.59% 0.171 273.5)
XYZ	xyz(9.2415, 6.0288, 35.3199)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3137A3 #A39D31

analogous

#3170A3 #3137A3 #6431A3

triadic

#3137A3 #A33137 #37A331

tetradic

#3137A3 #A33170 #A39D31 #31A364

square

#3137A3 #A33170 #A39D31 #31A364

split-complementary

#3137A3 #A36431 #70A331

monochromatic

#151745 #232774 #3137A3 #4950C8 #787DD6

Accessibility & contrast

On white

9.52

#3137A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#3137A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3137A3

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3137A3	#FFFFFF	#000000	##FFFFFF
##3137A3	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA6

Deuteranopia (green-blind)

#0040A1

Tritanopia (blue-blind)

#005368

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3137a3;
/* rgb */ color: rgb(49, 55, 163);
/* oklch */ color: oklch(40.6% 0.171 273.5);

Tailwind

colors: {
  custom: {
    50: '#796ebf',
    500: '#3137a3',
    950: '#000000',
  },
}

SCSS

$custom: #3137a3;
$custom-light: #796ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#3137a3",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 163
  },
  "hsl": {
    "h": 236.842,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40593,
    "c": 0.17069,
    "h": 273.5
  },
  "luminance": 0.0603
}

Semantic roles & 50–950 ramp

primary

#3137A3

secondary

#BFBB71

accent

#D54BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3137A3

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

Preview Lab → · Contrast checker → · Palette generator →