#3937C8#3937C8

#3937C8 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.7% C 0.216 H 273.9°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#3937C8
RGB	rgb(57, 55, 200)
HSL	hsl(241, 57%, 50%)
HSV	hsv(241, 73%, 78%)
CMYK	cmyk(71.5%, 72.5%, 0%, 21.6%)
CIE-LAB	lab(33.50, 47.35, -74.34)
CIE-LCH	lch(33.50, 88.14, 302.49°)
OKLab	oklab(44.68% 0.0148 -0.215)
OKLCH	oklch(44.68% 0.216 273.9)
XYZ	xyz(13.4754, 7.7710, 55.4222)
Luminance	0.0777 (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

#3937C8 #C6C837

analogous

#377DC8 #3937C8 #8237C8

triadic

#3937C8 #C83937 #37C839

tetradic

#3937C8 #C8377D #C6C837 #37C882

square

#3937C8 #C8377D #C6C837 #37C882

split-complementary

#3937C8 #C88237 #7DC837

monochromatic

#1E1D68 #2B2A98 #3937C8 #6967D5 #9897E2

Accessibility & contrast

On white

8.22

#3937C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3937C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937C8

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937C8	#FFFFFF	#000000	##FFFFFF
##3937C8	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CC

Deuteranopia (green-blind)

#0048C5

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3937c8;
/* rgb */ color: rgb(57, 55, 200);
/* oklch */ color: oklch(44.7% 0.216 273.9);

Tailwind

colors: {
  custom: {
    50: '#846fda',
    500: '#3937c8',
    950: '#000000',
  },
}

SCSS

$custom: #3937c8;
$custom-light: #846fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3937c8",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 200
  },
  "hsl": {
    "h": 240.828,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.44684,
    "c": 0.21552,
    "h": 273.9
  },
  "luminance": 0.07772
}

Semantic roles & 50–950 ramp

primary

#3937C8

secondary

#CDCE8D

accent

#E048DE

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3937C8

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

Preview Lab → · Contrast checker → · Palette generator →