#3777B2#3777B2

#3777B2 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.5% C 0.113 H 248.9°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3777B2
RGB	rgb(55, 119, 178)
HSL	hsl(209, 53%, 46%)
HSV	hsv(209, 69%, 70%)
CMYK	cmyk(69.1%, 33.1%, 0%, 30.2%)
CIE-LAB	lab(48.53, -0.91, -37.24)
CIE-LCH	lch(48.53, 37.26, 268.60°)
OKLab	oklab(55.51% -0.0406 -0.1055)
OKLCH	oklch(55.51% 0.113 248.9)
XYZ	xyz(16.2052, 17.2185, 44.5803)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777B2 #B27237

analogous

#37B2AF #3777B2 #373AB2

triadic

#3777B2 #B23777 #77B237

tetradic

#3777B2 #AF37B2 #B27237 #3AB237

square

#3777B2 #AF37B2 #B27237 #3AB237

split-complementary

#3777B2 #B2373A #B2AF37

monochromatic

#1A3854 #295883 #3777B2 #5A95CC #89B3DB

Accessibility & contrast

On white

4.73

#3777B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3777B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3777B2

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777B2	#FFFFFF	#000000	##FFFFFF
##3777B2	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB5

Deuteranopia (green-blind)

#4B6EB1

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3777b2;
/* rgb */ color: rgb(55, 119, 178);
/* oklch */ color: oklch(55.5% 0.113 248.9);

Tailwind

colors: {
  custom: {
    50: '#7c9dc9',
    500: '#3777b2',
    950: '#000000',
  },
}

SCSS

$custom: #3777b2;
$custom-light: #7c9dc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3777b2",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 178
  },
  "hsl": {
    "h": 208.78,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.55514,
    "c": 0.11309,
    "h": 248.9
  },
  "luminance": 0.1722
}

Semantic roles & 50–950 ramp

primary

#3777B2

secondary

#C5A180

accent

#914CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3777B2

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

Preview Lab → · Contrast checker → · Palette generator →