#3779BC#3779BC

#3779BC is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.5% C 0.124 H 251.2°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3779BC
RGB	rgb(55, 121, 188)
HSL	hsl(210, 55%, 48%)
HSV	hsv(210, 71%, 74%)
CMYK	cmyk(70.7%, 35.6%, 0%, 26.3%)
CIE-LAB	lab(49.64, 1.46, -41.28)
CIE-LCH	lch(49.64, 41.31, 272.03°)
OKLab	oklab(56.55% -0.0398 -0.1173)
OKLCH	oklch(56.55% 0.124 251.2)
XYZ	xyz(17.4866, 18.1159, 50.1423)
Luminance	0.1812 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3779BC #BC7A37

analogous

#37BBBC #3779BC #3837BC

triadic

#3779BC #BC3779 #79BC37

tetradic

#3779BC #BC37BB #BC7A37 #37BC38

square

#3779BC #BC37BB #BC7A37 #37BC38

split-complementary

#3779BC #BC3837 #BBBC37

monochromatic

#1B3C5D #295B8D #3779BC #6098D0 #8FB6DE

Accessibility & contrast

On white

4.54

#3779BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#3779BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779BC

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3779BC	#FFFFFF	#000000	##000000
##3779BC	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBF

Deuteranopia (green-blind)

#4870BB

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3779bc;
/* rgb */ color: rgb(55, 121, 188);
/* oklch */ color: oklch(56.5% 0.124 251.2);

Tailwind

colors: {
  custom: {
    50: '#7e9fd0',
    500: '#3779bc',
    950: '#000000',
  },
}

SCSS

$custom: #3779bc;
$custom-light: #7e9fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3779bc",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 188
  },
  "hsl": {
    "h": 210.226,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56546,
    "c": 0.12388,
    "h": 251.2
  },
  "luminance": 0.18118
}

Semantic roles & 50–950 ramp

primary

#3779BC

secondary

#C9A886

accent

#944ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3779BC

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

Preview Lab → · Contrast checker → · Palette generator →