#3937E0#3937E0

#3937E0 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 47.1% C 0.244 H 272.5°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#3937E0
RGB	rgb(57, 55, 224)
HSL	hsl(241, 73%, 55%)
HSV	hsv(241, 75%, 88%)
CMYK	cmyk(74.6%, 75.4%, 0%, 12.2%)
CIE-LAB	lab(35.95, 55.02, -84.16)
CIE-LCH	lch(35.95, 100.55, 303.17°)
OKLab	oklab(47.15% 0.0104 -0.2436)
OKLCH	oklch(47.15% 0.244 272.5)
XYZ	xyz(16.5036, 8.9823, 71.3705)
Luminance	0.0898 (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

#3937E0 #DEE037

analogous

#378AE0 #3937E0 #8E37E0

triadic

#3937E0 #E03937 #37E039

tetradic

#3937E0 #E0378A #DEE037 #37E08E

square

#3937E0 #E0378A #DEE037 #37E08E

split-complementary

#3937E0 #E08E37 #8AE037

monochromatic

#161588 #1F1DBD #3937E0 #6D6CE8 #A2A1F0

Accessibility & contrast

On white

7.51

#3937E0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3937E0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937E0

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937E0	#FFFFFF	#000000	##FFFFFF
##3937E0	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DE5

Deuteranopia (green-blind)

#004CDD

Tritanopia (blue-blind)

#00698A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3937e0;
/* rgb */ color: rgb(57, 55, 224);
/* oklch */ color: oklch(47.1% 0.244 272.5);

Tailwind

colors: {
  custom: {
    50: '#8a71eb',
    500: '#3937e0',
    950: '#000000',
  },
}

SCSS

$custom: #3937e0;
$custom-light: #8a71eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3937e0",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 224
  },
  "hsl": {
    "h": 240.71,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.47146,
    "c": 0.24381,
    "h": 272.5
  },
  "luminance": 0.08984
}

Semantic roles & 50–950 ramp

primary

#3937E0

secondary

#DCDD96

accent

#F038EE

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #3937E0

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

Preview Lab → · Contrast checker → · Palette generator →