#3773B7#3773B7

#3773B7 is a mid, vivid cyan. Relative luminance 0.165; OKLCH L 54.9% C 0.123 H 253.4°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3773B7
RGB	rgb(55, 115, 183)
HSL	hsl(212, 54%, 47%)
HSV	hsv(212, 70%, 72%)
CMYK	cmyk(69.9%, 37.2%, 0%, 28.2%)
CIE-LAB	lab(47.61, 3.32, -41.60)
CIE-LCH	lch(47.61, 41.73, 274.56°)
OKLab	oklab(54.88% -0.0353 -0.1183)
OKLCH	oklch(54.88% 0.123 253.4)
XYZ	xyz(16.2504, 16.4909, 47.1172)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B7 #B77B37

analogous

#37B3B7 #3773B7 #3B37B7

triadic

#3773B7 #B73773 #73B737

tetradic

#3773B7 #B737B3 #B77B37 #37B73B

square

#3773B7 #B737B3 #B77B37 #37B73B

split-complementary

#3773B7 #B73B37 #B3B737

monochromatic

#1B3859 #295588 #3773B7 #5D92CE #8CB2DC

Accessibility & contrast

On white

4.89

#3773B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#3773B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B7

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B7	#FFFFFF	#000000	##FFFFFF
##3773B7	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BA

Deuteranopia (green-blind)

#416BB6

Tritanopia (blue-blind)

#00838C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3773b7;
/* rgb */ color: rgb(55, 115, 183);
/* oklch */ color: oklch(54.9% 0.123 253.4);

Tailwind

colors: {
  custom: {
    50: '#7d9acd',
    500: '#3773b7',
    950: '#000000',
  },
}

SCSS

$custom: #3773b7;
$custom-light: #7d9acd;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b7",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 183
  },
  "hsl": {
    "h": 211.875,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54876,
    "c": 0.12347,
    "h": 253.4
  },
  "luminance": 0.16493
}

Semantic roles & 50–950 ramp

primary

#3773B7

secondary

#C7A783

accent

#984BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3773B7

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

Preview Lab → · Contrast checker → · Palette generator →