#377CC7#377CC7

#377CC7 is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 57.9% C 0.135 H 252.8°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#377CC7
RGB	rgb(55, 124, 199)
HSL	hsl(211, 57%, 50%)
HSV	hsv(211, 72%, 78%)
CMYK	cmyk(72.4%, 37.7%, 0%, 22%)
CIE-LAB	lab(51.09, 3.61, -45.28)
CIE-LCH	lch(51.09, 45.42, 274.56°)
OKLab	oklab(57.88% -0.0399 -0.1289)
OKLCH	oklch(57.88% 0.135 252.8)
XYZ	xyz(19.0882, 19.3489, 56.7505)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC7 #C78237

analogous

#37C4C7 #377CC7 #3A37C7

triadic

#377CC7 #C7377C #7CC737

tetradic

#377CC7 #C737C4 #C78237 #37C73A

square

#377CC7 #C737C4 #C78237 #37C73A

split-complementary

#377CC7 #C73A37 #C4C737

monochromatic

#1C4067 #2A5E97 #377CC7 #669BD5 #96BBE2

Accessibility & contrast

On white

4.31

#377CC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#377CC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC7	#FFFFFF	#000000	##000000
##377CC7	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5981CA

Deuteranopia (green-blind)

#4474C6

Tritanopia (blue-blind)

#008E98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377cc7;
/* rgb */ color: rgb(55, 124, 199);
/* oklch */ color: oklch(57.9% 0.135 252.8);

Tailwind

colors: {
  custom: {
    50: '#80a1d8',
    500: '#377cc7',
    950: '#000000',
  },
}

SCSS

$custom: #377cc7;
$custom-light: #80a1d8;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc7",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 199
  },
  "hsl": {
    "h": 211.25,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57875,
    "c": 0.13498,
    "h": 252.8
  },
  "luminance": 0.19351
}

Semantic roles & 50–950 ramp

primary

#377CC7

secondary

#CDAE8C

accent

#9748E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC7

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

Preview Lab → · Contrast checker → · Palette generator →