#377F9E#377F9E

#377F9E is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.4% C 0.086 H 229.3°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#377F9E
RGB	rgb(55, 127, 158)
HSL	hsl(198, 48%, 42%)
HSV	hsv(198, 65%, 62%)
CMYK	cmyk(65.2%, 19.6%, 0%, 38%)
CIE-LAB	lab(50.05, -12.49, -23.25)
CIE-LCH	lch(50.05, 26.40, 241.75°)
OKLab	oklab(56.41% -0.0558 -0.065)
OKLCH	oklch(56.41% 0.086 229.3)
XYZ	xyz(15.3340, 18.4580, 35.0958)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377F9E #9E5637

analogous

#379E8A #377F9E #374C9E

triadic

#377F9E #9E377F #7F9E37

tetradic

#377F9E #8A379E #9E5637 #4C9E37

square

#377F9E #8A379E #9E5637 #4C9E37

split-complementary

#377F9E #9E374C #9E8A37

monochromatic

#173643 #275B71 #377F9E #50A0C2 #7DB9D2

Accessibility & contrast

On white

4.48

#377F9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#377F9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377F9E

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377F9E	#FFFFFF	#000000	##000000
##377F9E	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7DA0

Deuteranopia (green-blind)

#61729E

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377f9e;
/* rgb */ color: rgb(55, 127, 158);
/* oklch */ color: oklch(56.4% 0.086 229.3);

Tailwind

colors: {
  custom: {
    50: '#79a4ba',
    500: '#377f9e',
    950: '#000000',
  },
}

SCSS

$custom: #377f9e;
$custom-light: #79a4ba;
$custom-dark: #000000;

JSON

{
  "hex": "#377f9e",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 158
  },
  "hsl": {
    "h": 198.058,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.56412,
    "c": 0.0857,
    "h": 229.3
  },
  "luminance": 0.1846
}

Semantic roles & 50–950 ramp

primary

#377F9E

secondary

#BB8B76

accent

#7950D8

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377F9E

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

Preview Lab → · Contrast checker → · Palette generator →