#3777D0#3777D0

#3777D0 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.3% C 0.152 H 257.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3777D0
RGB	rgb(55, 119, 208)
HSL	hsl(215, 62%, 52%)
HSV	hsv(215, 74%, 82%)
CMYK	cmyk(73.6%, 42.8%, 0%, 18.4%)
CIE-LAB	lab(50.17, 9.97, -51.88)
CIE-LCH	lch(50.17, 52.83, 280.88°)
OKLab	oklab(57.32% -0.0333 -0.1484)
OKLCH	oklch(57.32% 0.152 257.3)
XYZ	xyz(19.5534, 18.5578, 62.2138)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777D0 #D09037

analogous

#37C4D0 #3777D0 #4437D0

triadic

#3777D0 #D03777 #77D037

tetradic

#3777D0 #D037C4 #D09037 #37D044

square

#3777D0 #D037C4 #D09037 #37D044

split-complementary

#3777D0 #D04437 #C4D037

monochromatic

#1B3F72 #265BA3 #3777D0 #6999DC #9ABAE7

Accessibility & contrast

On white

4.46

#3777D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#3777D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777D0

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777D0	#FFFFFF	#000000	##000000
##3777D0	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7FD3

Deuteranopia (green-blind)

#3071CE

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3777d0;
/* rgb */ color: rgb(55, 119, 208);
/* oklch */ color: oklch(57.3% 0.152 257.3);

Tailwind

colors: {
  custom: {
    50: '#819ddf',
    500: '#3777d0',
    950: '#000000',
  },
}

SCSS

$custom: #3777d0;
$custom-light: #819ddf;
$custom-dark: #000000;

JSON

{
  "hex": "#3777d0",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 208
  },
  "hsl": {
    "h": 214.902,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57318,
    "c": 0.15212,
    "h": 257.3
  },
  "luminance": 0.1856
}

Semantic roles & 50–950 ramp

primary

#3777D0

secondary

#D3B790

accent

#A143E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3777D0

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

Preview Lab → · Contrast checker → · Palette generator →