#377BC6#377BC6

#377BC6 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.6% C 0.135 H 253.1°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#377BC6
RGB	rgb(55, 123, 198)
HSL	hsl(211, 57%, 50%)
HSV	hsv(211, 72%, 78%)
CMYK	cmyk(72.2%, 37.9%, 0%, 22.4%)
CIE-LAB	lab(50.75, 3.86, -45.25)
CIE-LCH	lch(50.75, 45.41, 274.87°)
OKLab	oklab(57.59% -0.0392 -0.1289)
OKLCH	oklch(57.59% 0.135 253.1)
XYZ	xyz(18.8478, 19.0533, 56.0995)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC6 #C68237

analogous

#37C2C6 #377BC6 #3B37C6

triadic

#377BC6 #C6377B #7BC637

tetradic

#377BC6 #C637C2 #C68237 #37C63B

square

#377BC6 #C637C2 #C68237 #37C63B

split-complementary

#377BC6 #C63B37 #C2C637

monochromatic

#1C3F66 #2A5D96 #377BC6 #669AD4 #96BAE2

Accessibility & contrast

On white

4.36

#377BC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#377BC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC6

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC6	#FFFFFF	#000000	##000000
##377BC6	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5880C9

Deuteranopia (green-blind)

#4373C5

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bc6;
/* rgb */ color: rgb(55, 123, 198);
/* oklch */ color: oklch(57.6% 0.135 253.1);

Tailwind

colors: {
  custom: {
    50: '#7fa0d8',
    500: '#377bc6',
    950: '#000000',
  },
}

SCSS

$custom: #377bc6;
$custom-light: #7fa0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc6",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 198
  },
  "hsl": {
    "h": 211.469,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57589,
    "c": 0.13472,
    "h": 253.1
  },
  "luminance": 0.19055
}

Semantic roles & 50–950 ramp

primary

#377BC6

secondary

#CDAE8C

accent

#9848E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC6

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

Preview Lab → · Contrast checker → · Palette generator →