#3779CB#3779CB

#3779CB is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.4% C 0.143 H 255.4°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3779CB
RGB	rgb(55, 121, 203)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 73%, 80%)
CMYK	cmyk(72.9%, 40.4%, 0%, 20.4%)
CIE-LAB	lab(50.45, 6.90, -48.58)
CIE-LCH	lch(50.45, 49.07, 278.08°)
OKLab	oklab(57.44% -0.0362 -0.1387)
OKLCH	oklch(57.44% 0.143 255.4)
XYZ	xyz(19.1884, 18.7966, 59.1052)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3779CB #CB8937

analogous

#37C3CB #3779CB #3F37CB

triadic

#3779CB #CB3779 #79CB37

tetradic

#3779CB #CB37C3 #CB8937 #37CB3F

square

#3779CB #CB37C3 #CB8937 #37CB3F

split-complementary

#3779CB #CB3F37 #C3CB37

monochromatic

#1C3F6C #295C9C #3779CB #689AD8 #98BAE4

Accessibility & contrast

On white

4.41

#3779CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#3779CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779CB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3779CB	#FFFFFF	#000000	##000000
##3779CB	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#527FCE

Deuteranopia (green-blind)

#3A72C9

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3779cb;
/* rgb */ color: rgb(55, 121, 203);
/* oklch */ color: oklch(57.4% 0.143 255.4);

Tailwind

colors: {
  custom: {
    50: '#809fdb',
    500: '#3779cb',
    950: '#000000',
  },
}

SCSS

$custom: #3779cb;
$custom-light: #809fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3779cb",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 203
  },
  "hsl": {
    "h": 213.243,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57444,
    "c": 0.14334,
    "h": 255.4
  },
  "luminance": 0.18799
}

Semantic roles & 50–950 ramp

primary

#3779CB

secondary

#D0B28E

accent

#9C46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3779CB

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

Preview Lab → · Contrast checker → · Palette generator →