#3A37B5#3A37B5

#3A37B5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.192 H 275.7°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3A37B5
RGB	rgb(58, 55, 181)
HSL	hsl(241, 53%, 46%)
HSV	hsv(241, 70%, 71%)
CMYK	cmyk(68%, 69.6%, 0%, 29%)
CIE-LAB	lab(31.73, 41.19, -66.07)
CIE-LCH	lch(31.73, 77.86, 301.94°)
OKLab	oklab(42.88% 0.019 -0.1908)
OKLCH	oklch(42.88% 0.192 275.7)
XYZ	xyz(11.4489, 6.9671, 44.4485)
Luminance	0.0697 (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

#3A37B5 #B2B537

analogous

#3773B5 #3A37B5 #7937B5

triadic

#3A37B5 #B53A37 #37B53A

tetradic

#3A37B5 #B53773 #B2B537 #37B579

square

#3A37B5 #B53773 #B2B537 #37B579

split-complementary

#3A37B5 #B57937 #73B537

monochromatic

#1C1A57 #2B2986 #3A37B5 #5F5CCD #8D8BDC

Accessibility & contrast

On white

8.77

#3A37B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3A37B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A37B5

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A37B5	#FFFFFF	#000000	##FFFFFF
##3A37B5	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B9

Deuteranopia (green-blind)

#0045B3

Tritanopia (blue-blind)

#005972

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3a37b5;
/* rgb */ color: rgb(58, 55, 181);
/* oklch */ color: oklch(42.9% 0.192 275.7);

Tailwind

colors: {
  custom: {
    50: '#816fcc',
    500: '#3a37b5',
    950: '#000000',
  },
}

SCSS

$custom: #3a37b5;
$custom-light: #816fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3a37b5",
  "rgb": {
    "r": 58,
    "g": 55,
    "b": 181
  },
  "hsl": {
    "h": 241.429,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42881,
    "c": 0.19178,
    "h": 275.7
  },
  "luminance": 0.06968
}

Semantic roles & 50–950 ramp

primary

#3A37B5

secondary

#C4C682

accent

#DD4BD9

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3A37B5

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

Preview Lab → · Contrast checker → · Palette generator →