#3B37CC#3B37CC

#3B37CC is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.2% C 0.220 H 274.3°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#3B37CC
RGB	rgb(59, 55, 204)
HSL	hsl(242, 59%, 51%)
HSV	hsv(242, 73%, 80%)
CMYK	cmyk(71.1%, 73%, 0%, 20%)
CIE-LAB	lab(34.03, 48.84, -75.80)
CIE-LCH	lch(34.03, 90.18, 302.79°)
OKLab	oklab(45.21% 0.0165 -0.2192)
OKLCH	oklch(45.21% 0.22 274.3)
XYZ	xyz(14.0653, 8.0204, 57.9219)
Luminance	0.0802 (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

#3B37CC #C8CC37

analogous

#377DCC #3B37CC #8537CC

triadic

#3B37CC #CC3B37 #37CC3B

tetradic

#3B37CC #CC377D #C8CC37 #37CC85

square

#3B37CC #CC377D #C8CC37 #37CC85

split-complementary

#3B37CC #CC8537 #7DCC37

monochromatic

#1E1C6D #2B289E #3B37CC #6B68D8 #9B99E5

Accessibility & contrast

On white

8.06

#3B37CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3B37CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B37CC

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B37CC	#FFFFFF	#000000	##FFFFFF
##3B37CC	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057D0

Deuteranopia (green-blind)

#0049C9

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3b37cc;
/* rgb */ color: rgb(59, 55, 204);
/* oklch */ color: oklch(45.2% 0.220 274.3);

Tailwind

colors: {
  custom: {
    50: '#8670dd',
    500: '#3b37cc',
    950: '#000000',
  },
}

SCSS

$custom: #3b37cc;
$custom-light: #8670dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3b37cc",
  "rgb": {
    "r": 59,
    "g": 55,
    "b": 204
  },
  "hsl": {
    "h": 241.611,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45209,
    "c": 0.21984,
    "h": 274.3
  },
  "luminance": 0.08022
}

Semantic roles & 50–950 ramp

primary

#3B37CC

secondary

#CFD08E

accent

#E345DE

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3B37CC

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

Preview Lab → · Contrast checker → · Palette generator →