#377CCC#377CCC

#377CCC is a mid, vivid cyan. Relative luminance 0.196; OKLCH L 58.2% C 0.141 H 254.1°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#377CCC
RGB	rgb(55, 124, 204)
HSL	hsl(212, 59%, 51%)
HSV	hsv(212, 73%, 80%)
CMYK	cmyk(73%, 39.2%, 0%, 20%)
CIE-LAB	lab(51.36, 5.43, -47.69)
CIE-LCH	lch(51.36, 48.00, 276.49°)
OKLab	oklab(58.18% -0.0387 -0.136)
OKLCH	oklch(58.18% 0.141 254.1)
XYZ	xyz(19.6782, 19.5850, 59.8582)
Luminance	0.1959 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CCC #CC8737

analogous

#37C6CC #377CCC #3C37CC

triadic

#377CCC #CC377C #7CCC37

tetradic

#377CCC #CC37C6 #CC8737 #37CC3C

square

#377CCC #CC37C6 #CC8737 #37CC3C

split-complementary

#377CCC #CC3C37 #C6CC37

monochromatic

#1C416D #285F9E #377CCC #689CD8 #99BCE5

Accessibility & contrast

On white

4.27

#377CCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#377CCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CCC

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CCC	#FFFFFF	#000000	##000000
##377CCC	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5782CF

Deuteranopia (green-blind)

#3F74CA

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377ccc;
/* rgb */ color: rgb(55, 124, 204);
/* oklch */ color: oklch(58.2% 0.141 254.1);

Tailwind

colors: {
  custom: {
    50: '#81a1dc',
    500: '#377ccc',
    950: '#000000',
  },
}

SCSS

$custom: #377ccc;
$custom-light: #81a1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#377ccc",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 204
  },
  "hsl": {
    "h": 212.215,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.58176,
    "c": 0.14143,
    "h": 254.1
  },
  "luminance": 0.19587
}

Semantic roles & 50–950 ramp

primary

#377CCC

secondary

#D0B28E

accent

#9A45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377CCC

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

Preview Lab → · Contrast checker → · Palette generator →