#3937C3#3937C3

#3937C3 is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.2% C 0.209 H 274.3°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#3937C3
RGB	rgb(57, 55, 195)
HSL	hsl(241, 56%, 49%)
HSV	hsv(241, 72%, 76%)
CMYK	cmyk(70.8%, 71.8%, 0%, 23.5%)
CIE-LAB	lab(33.01, 45.71, -72.23)
CIE-LCH	lch(33.01, 85.48, 302.33°)
OKLab	oklab(44.18% 0.0156 -0.2088)
OKLCH	oklch(44.18% 0.209 274.3)
XYZ	xyz(12.9006, 7.5411, 52.3949)
Luminance	0.0754 (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

#3937C3 #C1C337

analogous

#377BC3 #3937C3 #7F37C3

triadic

#3937C3 #C33937 #37C339

tetradic

#3937C3 #C3377B #C1C337 #37C37F

square

#3937C3 #C3377B #C1C337 #37C37F

split-complementary

#3937C3 #C37F37 #7BC337

monochromatic

#1D1C64 #2B2A93 #3937C3 #6664D3 #9594E1

Accessibility & contrast

On white

8.37

#3937C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3937C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937C3

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937C3	#FFFFFF	#000000	##FFFFFF
##3937C3	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C7

Deuteranopia (green-blind)

#0047C0

Tritanopia (blue-blind)

#005E79

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3937c3;
/* rgb */ color: rgb(57, 55, 195);
/* oklch */ color: oklch(44.2% 0.209 274.3);

Tailwind

colors: {
  custom: {
    50: '#836fd6',
    500: '#3937c3',
    950: '#000000',
  },
}

SCSS

$custom: #3937c3;
$custom-light: #836fd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3937c3",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 195
  },
  "hsl": {
    "h": 240.857,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44184,
    "c": 0.20943,
    "h": 274.3
  },
  "luminance": 0.07542
}

Semantic roles & 50–950 ramp

primary

#3937C3

secondary

#CBCC8A

accent

#DF49DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3937C3

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

Preview Lab → · Contrast checker → · Palette generator →