#3777C5#3777C5

#3777C5 is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.6% C 0.138 H 255.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3777C5
RGB	rgb(55, 119, 197)
HSL	hsl(213, 56%, 49%)
HSV	hsv(213, 72%, 77%)
CMYK	cmyk(72.1%, 39.6%, 0%, 22.7%)
CIE-LAB	lab(49.54, 5.94, -46.60)
CIE-LCH	lch(49.54, 46.98, 277.27°)
OKLab	oklab(56.63% -0.0357 -0.1329)
OKLCH	oklch(56.63% 0.138 255)
XYZ	xyz(18.2467, 18.0351, 55.3320)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777C5 #C58537

analogous

#37BEC5 #3777C5 #3E37C5

triadic

#3777C5 #C53777 #77C537

tetradic

#3777C5 #C537BE #C58537 #37C53E

square

#3777C5 #C537BE #C58537 #37C53E

split-complementary

#3777C5 #C53E37 #BEC537

monochromatic

#1C3D65 #2A5A95 #3777C5 #6597D4 #95B7E1

Accessibility & contrast

On white

4.56

#3777C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3777C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777C5

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777C5	#FFFFFF	#000000	##000000
##3777C5	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537DC8

Deuteranopia (green-blind)

#3C70C3

Tritanopia (blue-blind)

#008994

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3777c5;
/* rgb */ color: rgb(55, 119, 197);
/* oklch */ color: oklch(56.6% 0.138 255.0);

Tailwind

colors: {
  custom: {
    50: '#7f9dd7',
    500: '#3777c5',
    950: '#000000',
  },
}

SCSS

$custom: #3777c5;
$custom-light: #7f9dd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3777c5",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 197
  },
  "hsl": {
    "h": 212.958,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.56627,
    "c": 0.13763,
    "h": 255
  },
  "luminance": 0.18037
}

Semantic roles & 50–950 ramp

primary

#3777C5

secondary

#CDAF8B

accent

#9B48E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3777C5

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

Preview Lab → · Contrast checker → · Palette generator →