#3771C0#3771C0

#3771C0 is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 55.0% C 0.138 H 256.9°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3771C0
RGB	rgb(55, 113, 192)
HSL	hsl(215, 55%, 48%)
HSV	hsv(215, 71%, 75%)
CMYK	cmyk(71.4%, 41.1%, 0%, 24.7%)
CIE-LAB	lab(47.53, 7.83, -46.93)
CIE-LCH	lch(47.53, 47.58, 279.48°)
OKLab	oklab(54.97% -0.0312 -0.134)
OKLCH	oklch(54.97% 0.138 256.9)
XYZ	xyz(16.9916, 16.4264, 52.1341)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771C0 #C08637

analogous

#37B5C0 #3771C0 #4237C0

triadic

#3771C0 #C03771 #71C037

tetradic

#3771C0 #C037B5 #C08637 #37C042

square

#3771C0 #C037B5 #C08637 #37C042

split-complementary

#3771C0 #C04237 #B5C037

monochromatic

#1C3961 #295590 #3771C0 #6292D2 #92B3E0

Accessibility & contrast

On white

4.90

#3771C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#3771C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771C0

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771C0	#FFFFFF	#000000	##FFFFFF
##3771C0	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C78C3

Deuteranopia (green-blind)

#356BBE

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3771c0;
/* rgb */ color: rgb(55, 113, 192);
/* oklch */ color: oklch(55.0% 0.138 256.9);

Tailwind

colors: {
  custom: {
    50: '#7e99d3',
    500: '#3771c0',
    950: '#000000',
  },
}

SCSS

$custom: #3771c0;
$custom-light: #7e99d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3771c0",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 192
  },
  "hsl": {
    "h": 214.599,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54973,
    "c": 0.13758,
    "h": 256.9
  },
  "luminance": 0.16428
}

Semantic roles & 50–950 ramp

primary

#3771C0

secondary

#CBAE88

accent

#9F49DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3771C0

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

Preview Lab → · Contrast checker → · Palette generator →