#3757C4#3757C4

#3757C4 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.8% C 0.174 H 267.3°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#3757C4
RGB	rgb(55, 87, 196)
HSL	hsl(226, 56%, 49%)
HSV	hsv(226, 72%, 77%)
CMYK	cmyk(71.9%, 55.6%, 0%, 23.1%)
CIE-LAB	lab(40.59, 25.93, -60.41)
CIE-LCH	lch(40.59, 65.74, 293.23°)
OKLab	oklab(49.75% -0.0082 -0.174)
OKLCH	oklch(49.75% 0.174 267.3)
XYZ	xyz(14.9441, 11.6126, 53.6677)
Luminance	0.1161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757C4 #C4A437

analogous

#379EC4 #3757C4 #5E37C4

triadic

#3757C4 #C43757 #57C437

tetradic

#3757C4 #C4379E #C4A437 #37C45E

square

#3757C4 #C4379E #C4A437 #37C45E

split-complementary

#3757C4 #C45E37 #9EC437

monochromatic

#1C2D64 #2A4294 #3757C4 #657ED4 #94A6E1

Accessibility & contrast

On white

6.32

#3757C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#3757C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757C4

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757C4	#FFFFFF	#000000	##FFFFFF
##3757C4	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C8

Deuteranopia (green-blind)

#0059C2

Tritanopia (blue-blind)

#007285

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3757c4;
/* rgb */ color: rgb(55, 87, 196);
/* oklch */ color: oklch(49.8% 0.174 267.3);

Tailwind

colors: {
  custom: {
    50: '#8086d7',
    500: '#3757c4',
    950: '#000000',
  },
}

SCSS

$custom: #3757c4;
$custom-light: #8086d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3757c4",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 196
  },
  "hsl": {
    "h": 226.383,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.49752,
    "c": 0.17424,
    "h": 267.3
  },
  "luminance": 0.11614
}

Semantic roles & 50–950 ramp

primary

#3757C4

secondary

#CCBD8B

accent

#BD48DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3757C4

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

Preview Lab → · Contrast checker → · Palette generator →