#3757C3#3757C3

#3757C3 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.7% C 0.173 H 267.3°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#3757C3
RGB	rgb(55, 87, 195)
HSL	hsl(226, 56%, 49%)
HSV	hsv(226, 72%, 76%)
CMYK	cmyk(71.8%, 55.4%, 0%, 23.5%)
CIE-LAB	lab(40.52, 25.56, -59.95)
CIE-LCH	lch(40.52, 65.17, 293.09°)
OKLab	oklab(49.67% -0.0082 -0.1727)
OKLCH	oklch(49.67% 0.173 267.3)
XYZ	xyz(14.8306, 11.5672, 53.0703)
Luminance	0.1157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757C3 #C3A337

analogous

#379DC3 #3757C3 #5D37C3

triadic

#3757C3 #C33757 #57C337

tetradic

#3757C3 #C3379D #C3A337 #37C35D

square

#3757C3 #C3379D #C3A337 #37C35D

split-complementary

#3757C3 #C35D37 #9DC337

monochromatic

#1C2C64 #2A4293 #3757C3 #647DD3 #94A5E1

Accessibility & contrast

On white

6.34

#3757C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3757C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757C3

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757C3	#FFFFFF	#000000	##FFFFFF
##3757C3	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C7

Deuteranopia (green-blind)

#0059C1

Tritanopia (blue-blind)

#007184

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3757c3;
/* rgb */ color: rgb(55, 87, 195);
/* oklch */ color: oklch(49.7% 0.173 267.3);

Tailwind

colors: {
  custom: {
    50: '#8085d6',
    500: '#3757c3',
    950: '#000000',
  },
}

SCSS

$custom: #3757c3;
$custom-light: #8085d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3757c3",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 195
  },
  "hsl": {
    "h": 226.286,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.49673,
    "c": 0.17289,
    "h": 267.3
  },
  "luminance": 0.11569
}

Semantic roles & 50–950 ramp

primary

#3757C3

secondary

#CCBD8A

accent

#BD49DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3757C3

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

Preview Lab → · Contrast checker → · Palette generator →