#377E9C#377E9C

#377E9C is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.1% C 0.084 H 228.8°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377E9C
RGB	rgb(55, 126, 156)
HSL	hsl(198, 48%, 41%)
HSV	hsv(198, 65%, 61%)
CMYK	cmyk(64.7%, 19.2%, 0%, 38.8%)
CIE-LAB	lab(49.66, -12.59, -22.69)
CIE-LCH	lch(49.66, 25.95, 240.97°)
OKLab	oklab(56.07% -0.0555 -0.0634)
OKLCH	oklch(56.07% 0.084 228.8)
XYZ	xyz(15.0348, 18.1327, 34.1537)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E9C #9C5537

analogous

#379C88 #377E9C #374C9C

triadic

#377E9C #9C377E #7E9C37

tetradic

#377E9C #88379C #9C5537 #4C9C37

square

#377E9C #88379C #9C5537 #4C9C37

split-complementary

#377E9C #9C374C #9C8837

monochromatic

#173542 #27596F #377E9C #4F9FC1 #7CB8D1

Accessibility & contrast

On white

4.54

#377E9C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#377E9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377E9C

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E9C	#FFFFFF	#000000	##000000
##377E9C	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7C9E

Deuteranopia (green-blind)

#60729C

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377e9c;
/* rgb */ color: rgb(55, 126, 156);
/* oklch */ color: oklch(56.1% 0.084 228.8);

Tailwind

colors: {
  custom: {
    50: '#79a3b9',
    500: '#377e9c',
    950: '#000000',
  },
}

SCSS

$custom: #377e9c;
$custom-light: #79a3b9;
$custom-dark: #000000;

JSON

{
  "hex": "#377e9c",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 156
  },
  "hsl": {
    "h": 197.822,
    "s": 47.867,
    "l": 41.373
  },
  "oklch": {
    "l": 0.56073,
    "c": 0.08426,
    "h": 228.8
  },
  "luminance": 0.18134
}

Semantic roles & 50–950 ramp

primary

#377E9C

secondary

#BA8975

accent

#7850D7

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377E9C

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

Preview Lab → · Contrast checker → · Palette generator →