#3777BD#3777BD

#3777BD is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.127 H 252.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3777BD
RGB	rgb(55, 119, 189)
HSL	hsl(211, 55%, 48%)
HSV	hsv(211, 71%, 74%)
CMYK	cmyk(70.9%, 37%, 0%, 25.9%)
CIE-LAB	lab(49.10, 3.04, -42.70)
CIE-LCH	lch(49.10, 42.81, 274.07°)
OKLab	oklab(56.15% -0.0377 -0.1215)
OKLCH	oklch(56.15% 0.127 252.8)
XYZ	xyz(17.3543, 17.6781, 50.6319)
Luminance	0.1768 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777BD #BD7D37

analogous

#37BABD #3777BD #3A37BD

triadic

#3777BD #BD3777 #77BD37

tetradic

#3777BD #BD37BA #BD7D37 #37BD3A

square

#3777BD #BD37BA #BD7D37 #37BD3A

split-complementary

#3777BD #BD3A37 #BABD37

monochromatic

#1B3B5E #29598E #3777BD #6096D1 #90B5DF

Accessibility & contrast

On white

4.63

#3777BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3777BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3777BD

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777BD	#FFFFFF	#000000	##FFFFFF
##3777BD	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#577CC0

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3777bd;
/* rgb */ color: rgb(55, 119, 189);
/* oklch */ color: oklch(56.1% 0.127 252.8);

Tailwind

colors: {
  custom: {
    50: '#7e9dd1',
    500: '#3777bd',
    950: '#000000',
  },
}

SCSS

$custom: #3777bd;
$custom-light: #7e9dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3777bd",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 189
  },
  "hsl": {
    "h": 211.343,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56146,
    "c": 0.12718,
    "h": 252.8
  },
  "luminance": 0.1768
}

Semantic roles & 50–950 ramp

primary

#3777BD

secondary

#C9A986

accent

#974ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3777BD

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

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