#3775B9#3775B9

#3775B9 is a mid, vivid cyan. Relative luminance 0.170; OKLCH L 55.5% C 0.124 H 252.8°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3775B9
RGB	rgb(55, 117, 185)
HSL	hsl(211, 54%, 47%)
HSV	hsv(211, 70%, 73%)
CMYK	cmyk(70.3%, 36.8%, 0%, 27.5%)
CIE-LAB	lab(48.31, 2.82, -41.66)
CIE-LCH	lch(48.31, 41.75, 273.87°)
OKLab	oklab(55.45% -0.0367 -0.1185)
OKLCH	oklch(55.45% 0.124 252.8)
XYZ	xyz(16.6906, 17.0358, 48.2981)
Luminance	0.1704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775B9 #B97B37

analogous

#37B6B9 #3775B9 #3A37B9

triadic

#3775B9 #B93775 #75B937

tetradic

#3775B9 #B937B6 #B97B37 #37B93A

square

#3775B9 #B937B6 #B97B37 #37B93A

split-complementary

#3775B9 #B93A37 #B6B937

monochromatic

#1B395B #29578A #3775B9 #5E94CF #8DB3DD

Accessibility & contrast

On white

4.76

#3775B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3775B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3775B9

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775B9	#FFFFFF	#000000	##FFFFFF
##3775B9	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5679BC

Deuteranopia (green-blind)

#436DB8

Tritanopia (blue-blind)

#00858E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3775b9;
/* rgb */ color: rgb(55, 117, 185);
/* oklch */ color: oklch(55.5% 0.124 252.8);

Tailwind

colors: {
  custom: {
    50: '#7d9cce',
    500: '#3775b9',
    950: '#000000',
  },
}

SCSS

$custom: #3775b9;
$custom-light: #7d9cce;
$custom-dark: #000000;

JSON

{
  "hex": "#3775b9",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 185
  },
  "hsl": {
    "h": 211.385,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.55452,
    "c": 0.12402,
    "h": 252.8
  },
  "luminance": 0.17038
}

Semantic roles & 50–950 ramp

primary

#3775B9

secondary

#C8A784

accent

#974ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3775B9

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

Preview Lab → · Contrast checker → · Palette generator →