#3777C7#3777C7

#3777C7 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.8% C 0.140 H 255.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3777C7
RGB	rgb(55, 119, 199)
HSL	hsl(213, 57%, 50%)
HSV	hsv(213, 72%, 78%)
CMYK	cmyk(72.4%, 40.2%, 0%, 22%)
CIE-LAB	lab(49.65, 6.67, -47.57)
CIE-LCH	lch(49.65, 48.04, 277.99°)
OKLab	oklab(56.75% -0.0352 -0.1358)
OKLCH	oklch(56.75% 0.14 255.4)
XYZ	xyz(18.4774, 18.1274, 56.5469)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777C7 #C78737

analogous

#37BFC7 #3777C7 #3F37C7

triadic

#3777C7 #C73777 #77C737

tetradic

#3777C7 #C737BF #C78737 #37C73F

square

#3777C7 #C737BF #C78737 #37C73F

split-complementary

#3777C7 #C73F37 #BFC737

monochromatic

#1C3E67 #2A5A97 #3777C7 #6697D5 #96B8E2

Accessibility & contrast

On white

4.54

#3777C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3777C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777C7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777C7	#FFFFFF	#000000	##000000
##3777C7	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#517DCA

Deuteranopia (green-blind)

#3A70C5

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3777c7;
/* rgb */ color: rgb(55, 119, 199);
/* oklch */ color: oklch(56.8% 0.140 255.4);

Tailwind

colors: {
  custom: {
    50: '#809dd8',
    500: '#3777c7',
    950: '#000000',
  },
}

SCSS

$custom: #3777c7;
$custom-light: #809dd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3777c7",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 199
  },
  "hsl": {
    "h": 213.333,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.5675,
    "c": 0.14026,
    "h": 255.4
  },
  "luminance": 0.18129
}

Semantic roles & 50–950 ramp

primary

#3777C7

secondary

#CDB18C

accent

#9C48E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3777C7

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

Preview Lab → · Contrast checker → · Palette generator →