#3779B9#3779B9

#3779B9 is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.4% C 0.120 H 250.2°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3779B9
RGB	rgb(55, 121, 185)
HSL	hsl(210, 54%, 47%)
HSV	hsv(210, 70%, 73%)
CMYK	cmyk(70.3%, 34.6%, 0%, 27.5%)
CIE-LAB	lab(49.48, 0.38, -39.80)
CIE-LCH	lch(49.48, 39.80, 270.55°)
OKLab	oklab(56.37% -0.0407 -0.113)
OKLCH	oklch(56.37% 0.12 250.2)
XYZ	xyz(17.1666, 17.9879, 48.4568)
Luminance	0.1799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3779B9 #B97737

analogous

#37B9B8 #3779B9 #3738B9

triadic

#3779B9 #B93779 #79B937

tetradic

#3779B9 #B837B9 #B97737 #38B937

square

#3779B9 #B837B9 #B97737 #38B937

split-complementary

#3779B9 #B93738 #B9B837

monochromatic

#1B3B5B #295A8A #3779B9 #5E97CF #8DB6DD

Accessibility & contrast

On white

4.57

#3779B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#3779B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779B9

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3779B9	#FFFFFF	#000000	##000000
##3779B9	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7CBC

Deuteranopia (green-blind)

#4A70B8

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3779b9;
/* rgb */ color: rgb(55, 121, 185);
/* oklch */ color: oklch(56.4% 0.120 250.2);

Tailwind

colors: {
  custom: {
    50: '#7d9fce',
    500: '#3779b9',
    950: '#000000',
  },
}

SCSS

$custom: #3779b9;
$custom-light: #7d9fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3779b9",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 185
  },
  "hsl": {
    "h": 209.538,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56374,
    "c": 0.12005,
    "h": 250.2
  },
  "luminance": 0.1799
}

Semantic roles & 50–950 ramp

primary

#3779B9

secondary

#C8A584

accent

#934ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3779B9

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

Preview Lab → · Contrast checker → · Palette generator →