#377CC6#377CC6

#377CC6 is a mid, vivid cyan. Relative luminance 0.193; OKLCH L 57.8% C 0.134 H 252.5°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#377CC6
RGB	rgb(55, 124, 198)
HSL	hsl(211, 57%, 50%)
HSV	hsv(211, 72%, 78%)
CMYK	cmyk(72.2%, 37.4%, 0%, 22.4%)
CIE-LAB	lab(51.04, 3.25, -44.79)
CIE-LCH	lch(51.04, 44.91, 274.15°)
OKLab	oklab(57.82% -0.0401 -0.1275)
OKLCH	oklch(57.82% 0.134 252.5)
XYZ	xyz(18.9724, 19.3026, 56.1410)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC6 #C68137

analogous

#37C4C6 #377CC6 #3937C6

triadic

#377CC6 #C6377C #7CC637

tetradic

#377CC6 #C637C4 #C68137 #37C639

square

#377CC6 #C637C4 #C68137 #37C639

split-complementary

#377CC6 #C63937 #C4C637

monochromatic

#1C4066 #2A5E96 #377CC6 #669BD4 #96BAE2

Accessibility & contrast

On white

4.32

#377CC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#377CC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC6

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC6	#FFFFFF	#000000	##000000
##377CC6	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A81C9

Deuteranopia (green-blind)

#4573C5

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377cc6;
/* rgb */ color: rgb(55, 124, 198);
/* oklch */ color: oklch(57.8% 0.134 252.5);

Tailwind

colors: {
  custom: {
    50: '#7fa1d7',
    500: '#377cc6',
    950: '#000000',
  },
}

SCSS

$custom: #377cc6;
$custom-light: #7fa1d7;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc6",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 198
  },
  "hsl": {
    "h": 211.049,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57816,
    "c": 0.13369,
    "h": 252.5
  },
  "luminance": 0.19305
}

Semantic roles & 50–950 ramp

primary

#377CC6

secondary

#CDAE8C

accent

#9748E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC6

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

Preview Lab → · Contrast checker → · Palette generator →