#3775B7#3775B7

#3775B7 is a mid, vivid cyan. Relative luminance 0.170; OKLCH L 55.3% C 0.121 H 252.1°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3775B7
RGB	rgb(55, 117, 183)
HSL	hsl(211, 54%, 47%)
HSV	hsv(211, 70%, 72%)
CMYK	cmyk(69.9%, 36.1%, 0%, 28.2%)
CIE-LAB	lab(48.20, 2.09, -40.67)
CIE-LCH	lch(48.20, 40.72, 272.95°)
OKLab	oklab(55.34% -0.0372 -0.1156)
OKLCH	oklch(55.34% 0.121 252.1)
XYZ	xyz(16.4809, 16.9519, 47.1940)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775B7 #B77937

analogous

#37B5B7 #3775B7 #3937B7

triadic

#3775B7 #B73775 #75B737

tetradic

#3775B7 #B737B5 #B77937 #37B739

square

#3775B7 #B737B5 #B77937 #37B739

split-complementary

#3775B7 #B73937 #B5B737

monochromatic

#1B3959 #295788 #3775B7 #5D94CE #8CB3DC

Accessibility & contrast

On white

4.78

#3775B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3775B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3775B7

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775B7	#FFFFFF	#000000	##FFFFFF
##3775B7	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5779BA

Deuteranopia (green-blind)

#456DB6

Tritanopia (blue-blind)

#00848D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3775b7;
/* rgb */ color: rgb(55, 117, 183);
/* oklch */ color: oklch(55.3% 0.121 252.1);

Tailwind

colors: {
  custom: {
    50: '#7d9ccd',
    500: '#3775b7',
    950: '#000000',
  },
}

SCSS

$custom: #3775b7;
$custom-light: #7d9ccd;
$custom-dark: #000000;

JSON

{
  "hex": "#3775b7",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 183
  },
  "hsl": {
    "h": 210.938,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55335,
    "c": 0.12142,
    "h": 252.1
  },
  "luminance": 0.16954
}

Semantic roles & 50–950 ramp

primary

#3775B7

secondary

#C7A683

accent

#964BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3775B7

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

Preview Lab → · Contrast checker → · Palette generator →