#3757C1#3757C1

#3757C1 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.5% C 0.170 H 267.2°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#3757C1
RGB	rgb(55, 87, 193)
HSL	hsl(226, 56%, 49%)
HSV	hsv(226, 72%, 76%)
CMYK	cmyk(71.5%, 54.9%, 0%, 24.3%)
CIE-LAB	lab(40.37, 24.83, -59.02)
CIE-LCH	lch(40.37, 64.03, 292.81°)
OKLab	oklab(49.52% -0.0084 -0.17)
OKLCH	oklch(49.52% 0.17 267.2)
XYZ	xyz(14.6060, 11.4774, 51.8873)
Luminance	0.1148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757C1 #C1A137

analogous

#379CC1 #3757C1 #5C37C1

triadic

#3757C1 #C13757 #57C137

tetradic

#3757C1 #C1379C #C1A137 #37C15C

square

#3757C1 #C1379C #C1A137 #37C15C

split-complementary

#3757C1 #C15C37 #9CC137

monochromatic

#1C2C62 #294291 #3757C1 #637DD2 #92A4E0

Accessibility & contrast

On white

6.37

#3757C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3757C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757C1

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757C1	#FFFFFF	#000000	##FFFFFF
##3757C1	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C5

Deuteranopia (green-blind)

#0059BF

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3757c1;
/* rgb */ color: rgb(55, 87, 193);
/* oklch */ color: oklch(49.5% 0.170 267.2);

Tailwind

colors: {
  custom: {
    50: '#8085d4',
    500: '#3757c1',
    950: '#000000',
  },
}

SCSS

$custom: #3757c1;
$custom-light: #8085d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3757c1",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 193
  },
  "hsl": {
    "h": 226.087,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.49516,
    "c": 0.17018,
    "h": 267.2
  },
  "luminance": 0.11479
}

Semantic roles & 50–950 ramp

primary

#3757C1

secondary

#CBBC89

accent

#BC49DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3757C1

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

Preview Lab → · Contrast checker → · Palette generator →