#3937A0#3937A0

#3937A0 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.9% C 0.165 H 277.1°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#3937A0
RGB	rgb(57, 55, 160)
HSL	hsl(241, 49%, 42%)
HSV	hsv(241, 66%, 63%)
CMYK	cmyk(64.4%, 65.6%, 0%, 37.3%)
CIE-LAB	lab(29.76, 33.95, -56.71)
CIE-LCH	lch(29.76, 66.09, 300.91°)
OKLab	oklab(40.86% 0.0203 -0.1635)
OKLCH	oklch(40.86% 0.165 277.1)
XYZ	xyz(9.3966, 6.1395, 33.9408)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3937A0 #9EA037

analogous

#376AA0 #3937A0 #6E37A0

triadic

#3937A0 #A03937 #37A039

tetradic

#3937A0 #A0376A #9EA037 #37A06E

square

#3937A0 #A0376A #9EA037 #37A06E

split-complementary

#3937A0 #A06E37 #6AA037

monochromatic

#191845 #292772 #3937A0 #5351C3 #807FD3

Accessibility & contrast

On white

9.43

#3937A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3937A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937A0

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937A0	#FFFFFF	#000000	##FFFFFF
##3937A0	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005266

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3937a0;
/* rgb */ color: rgb(57, 55, 160);
/* oklch */ color: oklch(40.9% 0.165 277.1);

Tailwind

colors: {
  custom: {
    50: '#7c6ebd',
    500: '#3937a0',
    950: '#000000',
  },
}

SCSS

$custom: #3937a0;
$custom-light: #7c6ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#3937a0",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 160
  },
  "hsl": {
    "h": 241.143,
    "s": 48.837,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40855,
    "c": 0.1647,
    "h": 277.1
  },
  "luminance": 0.0614
}

Semantic roles & 50–950 ramp

primary

#3937A0

secondary

#BBBC77

accent

#D84FD6

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3937A0

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

Preview Lab → · Contrast checker → · Palette generator →