#377FC5#377FC5

#377FC5 is a mid, vivid cyan. Relative luminance 0.200; OKLCH L 58.4% C 0.129 H 250.5°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#377FC5
RGB	rgb(55, 127, 197)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 77%)
CMYK	cmyk(72.1%, 35.5%, 0%, 22.7%)
CIE-LAB	lab(51.86, 1.08, -42.92)
CIE-LCH	lch(51.86, 42.93, 271.44°)
OKLab	oklab(58.44% -0.0432 -0.122)
OKLCH	oklch(58.44% 0.129 250.5)
XYZ	xyz(19.2392, 20.0201, 55.6628)
Luminance	0.2002 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FC5 #C57D37

analogous

#37C5C4 #377FC5 #3738C5

triadic

#377FC5 #C5377F #7FC537

tetradic

#377FC5 #C437C5 #C57D37 #38C537

square

#377FC5 #C437C5 #C57D37 #38C537

split-complementary

#377FC5 #C53738 #C5C437

monochromatic

#1C4165 #2A6095 #377FC5 #659DD4 #95BCE1

Accessibility & contrast

On white

4.20

#377FC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#377FC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FC5

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FC5	#FFFFFF	#000000	##000000
##377FC5	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F83C8

Deuteranopia (green-blind)

#4A76C4

Tritanopia (blue-blind)

#009099

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377fc5;
/* rgb */ color: rgb(55, 127, 197);
/* oklch */ color: oklch(58.4% 0.129 250.5);

Tailwind

colors: {
  custom: {
    50: '#7fa3d7',
    500: '#377fc5',
    950: '#000000',
  },
}

SCSS

$custom: #377fc5;
$custom-light: #7fa3d7;
$custom-dark: #000000;

JSON

{
  "hex": "#377fc5",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 197
  },
  "hsl": {
    "h": 209.577,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.58441,
    "c": 0.12943,
    "h": 250.5
  },
  "luminance": 0.20022
}

Semantic roles & 50–950 ramp

primary

#377FC5

secondary

#CDAB8B

accent

#9348E0

background

#F8FAFD

surface

#F0F3FA

border

#CBCDD3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #377FC5

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

Preview Lab → · Contrast checker → · Palette generator →