#377E9F#377E9F

#377E9F is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.2% C 0.087 H 231.3°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#377E9F
RGB	rgb(55, 126, 159)
HSL	hsl(199, 49%, 42%)
HSV	hsv(199, 65%, 62%)
CMYK	cmyk(65.4%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.78, -11.59, -24.25)
CIE-LCH	lch(49.78, 26.88, 244.45°)
OKLab	oklab(56.21% -0.0543 -0.0679)
OKLCH	oklch(56.21% 0.087 231.3)
XYZ	xyz(15.2920, 18.2356, 35.5081)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E9F #9F5837

analogous

#379F8C #377E9F #374A9F

triadic

#377E9F #9F377E #7E9F37

tetradic

#377E9F #8C379F #9F5837 #4A9F37

square

#377E9F #8C379F #9F5837 #4A9F37

split-complementary

#377E9F #9F374A #9F8C37

monochromatic

#183644 #275A72 #377E9F #519EC3 #7EB8D2

Accessibility & contrast

On white

4.52

#377E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#377E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377E9F

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E9F	#FFFFFF	#000000	##000000
##377E9F	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7CA1

Deuteranopia (green-blind)

#5F729F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377e9f;
/* rgb */ color: rgb(55, 126, 159);
/* oklch */ color: oklch(56.2% 0.087 231.3);

Tailwind

colors: {
  custom: {
    50: '#79a3bb',
    500: '#377e9f',
    950: '#000000',
  },
}

SCSS

$custom: #377e9f;
$custom-light: #79a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#377e9f",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 199.038,
    "s": 48.598,
    "l": 41.961
  },
  "oklch": {
    "l": 0.56213,
    "c": 0.08695,
    "h": 231.3
  },
  "luminance": 0.18237
}

Semantic roles & 50–950 ramp

primary

#377E9F

secondary

#BC8C76

accent

#7B50D8

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #377E9F

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

Preview Lab → · Contrast checker → · Palette generator →