#3775BB#3775BB

#3775BB is a mid, vivid cyan. Relative luminance 0.171; OKLCH L 55.6% C 0.127 H 253.4°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3775BB
RGB	rgb(55, 117, 187)
HSL	hsl(212, 55%, 47%)
HSV	hsv(212, 71%, 73%)
CMYK	cmyk(70.6%, 37.4%, 0%, 26.7%)
CIE-LAB	lab(48.41, 3.54, -42.64)
CIE-LCH	lch(48.41, 42.79, 274.75°)
OKLab	oklab(55.57% -0.0362 -0.1213)
OKLCH	oklch(55.57% 0.127 253.4)
XYZ	xyz(16.9032, 17.1208, 49.4179)
Luminance	0.1712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775BB #BB7D37

analogous

#37B7BB #3775BB #3B37BB

triadic

#3775BB #BB3775 #75BB37

tetradic

#3775BB #BB37B7 #BB7D37 #37BB3B

square

#3775BB #BB37B7 #BB7D37 #37BB3B

split-complementary

#3775BB #BB3B37 #B7BB37

monochromatic

#1B3A5C #29578C #3775BB #5F94D0 #8EB4DE

Accessibility & contrast

On white

4.75

#3775BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3775BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3775BB

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775BB	#FFFFFF	#000000	##FFFFFF
##3775BB	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#557ABE

Deuteranopia (green-blind)

#426DBA

Tritanopia (blue-blind)

#00858F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3775bb;
/* rgb */ color: rgb(55, 117, 187);
/* oklch */ color: oklch(55.6% 0.127 253.4);

Tailwind

colors: {
  custom: {
    50: '#7d9cd0',
    500: '#3775bb',
    950: '#000000',
  },
}

SCSS

$custom: #3775bb;
$custom-light: #7d9cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3775bb",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 187
  },
  "hsl": {
    "h": 211.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.55571,
    "c": 0.12664,
    "h": 253.4
  },
  "luminance": 0.17123
}

Semantic roles & 50–950 ramp

primary

#3775BB

secondary

#C9A985

accent

#984ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3775BB

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

Preview Lab → · Contrast checker → · Palette generator →