#3777C9#3777C9

#3777C9 is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.9% C 0.143 H 255.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3777C9
RGB	rgb(55, 119, 201)
HSL	hsl(214, 57%, 50%)
HSV	hsv(214, 73%, 79%)
CMYK	cmyk(72.6%, 40.8%, 0%, 21.2%)
CIE-LAB	lab(49.76, 7.40, -48.53)
CIE-LCH	lch(49.76, 49.10, 278.67°)
OKLab	oklab(56.88% -0.0348 -0.1386)
OKLCH	oklch(56.88% 0.143 255.9)
XYZ	xyz(18.7111, 18.2209, 57.7779)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777C9 #C98937

analogous

#37C0C9 #3777C9 #4037C9

triadic

#3777C9 #C93777 #77C937

tetradic

#3777C9 #C937C0 #C98937 #37C940

square

#3777C9 #C937C0 #C98937 #37C940

split-complementary

#3777C9 #C94037 #C0C937

monochromatic

#1C3E69 #295A99 #3777C9 #6798D6 #97B9E3

Accessibility & contrast

On white

4.52

#3777C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3777C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777C9

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777C9	#FFFFFF	#000000	##000000
##3777C9	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507ECC

Deuteranopia (green-blind)

#3870C7

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3777c9;
/* rgb */ color: rgb(55, 119, 201);
/* oklch */ color: oklch(56.9% 0.143 255.9);

Tailwind

colors: {
  custom: {
    50: '#809dda',
    500: '#3777c9',
    950: '#000000',
  },
}

SCSS

$custom: #3777c9;
$custom-light: #809dda;
$custom-dark: #000000;

JSON

{
  "hex": "#3777c9",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 201
  },
  "hsl": {
    "h": 213.699,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.56875,
    "c": 0.14289,
    "h": 255.9
  },
  "luminance": 0.18223
}

Semantic roles & 50–950 ramp

primary

#3777C9

secondary

#CFB28D

accent

#9D47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3777C9

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

Preview Lab → · Contrast checker → · Palette generator →