#3777BF#3777BF

#3777BF is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.3% C 0.130 H 253.4°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3777BF
RGB	rgb(55, 119, 191)
HSL	hsl(212, 55%, 48%)
HSV	hsv(212, 71%, 75%)
CMYK	cmyk(71.2%, 37.7%, 0%, 25.1%)
CIE-LAB	lab(49.21, 3.76, -43.68)
CIE-LCH	lch(49.21, 43.84, 274.92°)
OKLab	oklab(56.27% -0.0371 -0.1243)
OKLCH	oklch(56.27% 0.13 253.4)
XYZ	xyz(17.5729, 17.7656, 51.7831)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777BF #BF7F37

analogous

#37BBBF #3777BF #3B37BF

triadic

#3777BF #BF3777 #77BF37

tetradic

#3777BF #BF37BB #BF7F37 #37BF3B

square

#3777BF #BF37BB #BF7F37 #37BF3B

split-complementary

#3777BF #BF3B37 #BBBF37

monochromatic

#1C3C60 #29598F #3777BF #6296D2 #91B6DF

Accessibility & contrast

On white

4.61

#3777BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3777BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3777BF

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777BF	#FFFFFF	#000000	##FFFFFF
##3777BF	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#567CC2

Deuteranopia (green-blind)

#426FBE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3777bf;
/* rgb */ color: rgb(55, 119, 191);
/* oklch */ color: oklch(56.3% 0.130 253.4);

Tailwind

colors: {
  custom: {
    50: '#7e9dd3',
    500: '#3777bf',
    950: '#000000',
  },
}

SCSS

$custom: #3777bf;
$custom-light: #7e9dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3777bf",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 191
  },
  "hsl": {
    "h": 211.765,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.56265,
    "c": 0.12978,
    "h": 253.4
  },
  "luminance": 0.17767
}

Semantic roles & 50–950 ramp

primary

#3777BF

secondary

#CAAB88

accent

#9849DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3777BF

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

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