#3A37AB#3A37AB

#3A37AB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.179 H 276.5°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#3A37AB
RGB	rgb(58, 55, 171)
HSL	hsl(242, 51%, 44%)
HSV	hsv(242, 68%, 67%)
CMYK	cmyk(66.1%, 67.8%, 0%, 32.9%)
CIE-LAB	lab(30.81, 37.83, -61.62)
CIE-LCH	lch(30.81, 72.30, 301.55°)
OKLab	oklab(41.94% 0.0204 -0.1778)
OKLCH	oklch(41.94% 0.179 276.5)
XYZ	xyz(10.4594, 6.5713, 39.2374)
Luminance	0.0657 (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

#3A37AB #A8AB37

analogous

#376EAB #3A37AB #7437AB

triadic

#3A37AB #AB3A37 #37AB3A

tetradic

#3A37AB #AB376E #A8AB37 #37AB74

square

#3A37AB #AB376E #A8AB37 #37AB74

split-complementary

#3A37AB #AB7437 #6EAB37

monochromatic

#1B194E #2A287D #3A37AB #5956C9 #8785D8

Accessibility & contrast

On white

9.07

#3A37AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3A37AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A37AB

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A37AB	#FFFFFF	#000000	##FFFFFF
##3A37AB	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3a37ab;
/* rgb */ color: rgb(58, 55, 171);
/* oklch */ color: oklch(41.9% 0.179 276.5);

Tailwind

colors: {
  custom: {
    50: '#7f6ec5',
    500: '#3a37ab',
    950: '#000000',
  },
}

SCSS

$custom: #3a37ab;
$custom-light: #7f6ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3a37ab",
  "rgb": {
    "r": 58,
    "g": 55,
    "b": 171
  },
  "hsl": {
    "h": 241.552,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41935,
    "c": 0.17897,
    "h": 276.5
  },
  "luminance": 0.06572
}

Semantic roles & 50–950 ramp

primary

#3A37AB

secondary

#C0C17C

accent

#DB4DD7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3A37AB

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

Preview Lab → · Contrast checker → · Palette generator →