#3757C0#3757C0

#3757C0 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.4% C 0.169 H 267.1°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3757C0
RGB	rgb(55, 87, 192)
HSL	hsl(226, 55%, 48%)
HSV	hsv(226, 71%, 75%)
CMYK	cmyk(71.4%, 54.7%, 0%, 24.7%)
CIE-LAB	lab(40.30, 24.46, -58.56)
CIE-LCH	lch(40.30, 63.46, 292.67°)
OKLab	oklab(49.44% -0.0084 -0.1686)
OKLCH	oklch(49.44% 0.169 267.1)
XYZ	xyz(14.4949, 11.4329, 51.3018)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757C0 #C0A037

analogous

#379BC0 #3757C0 #5B37C0

triadic

#3757C0 #C03757 #57C037

tetradic

#3757C0 #C0379B #C0A037 #37C05B

square

#3757C0 #C0379B #C0A037 #37C05B

split-complementary

#3757C0 #C05B37 #9BC037

monochromatic

#1C2C61 #294190 #3757C0 #627CD2 #92A4E0

Accessibility & contrast

On white

6.39

#3757C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3757C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757C0

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757C0	#FFFFFF	#000000	##FFFFFF
##3757C0	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C4

Deuteranopia (green-blind)

#0059BE

Tritanopia (blue-blind)

#007083

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3757c0;
/* rgb */ color: rgb(55, 87, 192);
/* oklch */ color: oklch(49.4% 0.169 267.1);

Tailwind

colors: {
  custom: {
    50: '#7f85d4',
    500: '#3757c0',
    950: '#000000',
  },
}

SCSS

$custom: #3757c0;
$custom-light: #7f85d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3757c0",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 192
  },
  "hsl": {
    "h": 225.985,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.49438,
    "c": 0.16882,
    "h": 267.1
  },
  "luminance": 0.11434
}

Semantic roles & 50–950 ramp

primary

#3757C0

secondary

#CBBB88

accent

#BC49DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3757C0

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

Preview Lab → · Contrast checker → · Palette generator →