#3777BC#3777BC

#3777BC is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.1% C 0.126 H 252.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3777BC
RGB	rgb(55, 119, 188)
HSL	hsl(211, 55%, 48%)
HSV	hsv(211, 71%, 74%)
CMYK	cmyk(70.7%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(49.05, 2.68, -42.21)
CIE-LCH	lch(49.05, 42.29, 273.63°)
OKLab	oklab(56.09% -0.0379 -0.12)
OKLCH	oklch(56.09% 0.126 252.5)
XYZ	xyz(17.2461, 17.6349, 50.0622)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777BC #BC7C37

analogous

#37B9BC #3777BC #3937BC

triadic

#3777BC #BC3777 #77BC37

tetradic

#3777BC #BC37B9 #BC7C37 #37BC39

square

#3777BC #BC37B9 #BC7C37 #37BC39

split-complementary

#3777BC #BC3937 #B9BC37

monochromatic

#1B3B5D #29598D #3777BC #6096D0 #8FB5DE

Accessibility & contrast

On white

4.64

#3777BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3777BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3777BC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777BC	#FFFFFF	#000000	##FFFFFF
##3777BC	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#446FBB

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3777bc;
/* rgb */ color: rgb(55, 119, 188);
/* oklch */ color: oklch(56.1% 0.126 252.5);

Tailwind

colors: {
  custom: {
    50: '#7e9dd0',
    500: '#3777bc',
    950: '#000000',
  },
}

SCSS

$custom: #3777bc;
$custom-light: #7e9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3777bc",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 211.128,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56087,
    "c": 0.12588,
    "h": 252.5
  },
  "luminance": 0.17637
}

Semantic roles & 50–950 ramp

primary

#3777BC

secondary

#C9A986

accent

#974ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3777BC

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

Preview Lab → · Contrast checker → · Palette generator →