#377CC8#377CC8

#377CC8 is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 57.9% C 0.136 H 253.1°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#377CC8
RGB	rgb(55, 124, 200)
HSL	hsl(211, 57%, 50%)
HSV	hsv(211, 73%, 78%)
CMYK	cmyk(72.5%, 38%, 0%, 21.6%)
CIE-LAB	lab(51.15, 3.97, -45.76)
CIE-LCH	lch(51.15, 45.93, 274.96°)
OKLab	oklab(57.94% -0.0396 -0.1304)
OKLCH	oklch(57.94% 0.136 253.1)
XYZ	xyz(19.2047, 19.3955, 57.3640)
Luminance	0.1940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC8 #C88337

analogous

#37C5C8 #377CC8 #3A37C8

triadic

#377CC8 #C8377C #7CC837

tetradic

#377CC8 #C837C5 #C88337 #37C83A

square

#377CC8 #C837C5 #C88337 #37C83A

split-complementary

#377CC8 #C83A37 #C5C837

monochromatic

#1D4068 #2A5E98 #377CC8 #679BD5 #97BBE2

Accessibility & contrast

On white

4.30

#377CC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#377CC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC8

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC8	#FFFFFF	#000000	##000000
##377CC8	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5981CB

Deuteranopia (green-blind)

#4374C6

Tritanopia (blue-blind)

#008E98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377cc8;
/* rgb */ color: rgb(55, 124, 200);
/* oklch */ color: oklch(57.9% 0.136 253.1);

Tailwind

colors: {
  custom: {
    50: '#80a1d9',
    500: '#377cc8',
    950: '#000000',
  },
}

SCSS

$custom: #377cc8;
$custom-light: #80a1d9;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc8",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 200
  },
  "hsl": {
    "h": 211.448,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.57935,
    "c": 0.13626,
    "h": 253.1
  },
  "luminance": 0.19398
}

Semantic roles & 50–950 ramp

primary

#377CC8

secondary

#CEAF8D

accent

#9848E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC8

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

Preview Lab → · Contrast checker → · Palette generator →