#3937C7#3937C7

#3937C7 is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.6% C 0.214 H 274.0°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#3937C7
RGB	rgb(57, 55, 199)
HSL	hsl(241, 57%, 50%)
HSV	hsv(241, 72%, 78%)
CMYK	cmyk(71.4%, 72.4%, 0%, 22%)
CIE-LAB	lab(33.40, 47.02, -73.92)
CIE-LCH	lch(33.40, 87.61, 302.46°)
OKLab	oklab(44.58% 0.015 -0.2138)
OKLCH	oklch(44.58% 0.214 274)
XYZ	xyz(13.3589, 7.7244, 54.8087)
Luminance	0.0773 (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

#3937C7 #C5C737

analogous

#377DC7 #3937C7 #8137C7

triadic

#3937C7 #C73937 #37C739

tetradic

#3937C7 #C7377D #C5C737 #37C781

square

#3937C7 #C7377D #C5C737 #37C781

split-complementary

#3937C7 #C78137 #7DC737

monochromatic

#1E1C67 #2B2A97 #3937C7 #6866D5 #9796E2

Accessibility & contrast

On white

8.25

#3937C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3937C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937C7

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937C7	#FFFFFF	#000000	##FFFFFF
##3937C7	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055CB

Deuteranopia (green-blind)

#0048C4

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3937c7;
/* rgb */ color: rgb(57, 55, 199);
/* oklch */ color: oklch(44.6% 0.214 274.0);

Tailwind

colors: {
  custom: {
    50: '#846fd9',
    500: '#3937c7',
    950: '#000000',
  },
}

SCSS

$custom: #3937c7;
$custom-light: #846fd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3937c7",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 199
  },
  "hsl": {
    "h": 240.833,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.44583,
    "c": 0.2143,
    "h": 274
  },
  "luminance": 0.07726
}

Semantic roles & 50–950 ramp

primary

#3937C7

secondary

#CDCD8C

accent

#E048DE

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3937C7

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

Preview Lab → · Contrast checker → · Palette generator →