#377E9A#377E9A

#377E9A is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.0% C 0.083 H 227.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377E9A
RGB	rgb(55, 126, 154)
HSL	hsl(197, 47%, 41%)
HSV	hsv(197, 64%, 60%)
CMYK	cmyk(64.3%, 18.2%, 0%, 39.6%)
CIE-LAB	lab(49.58, -13.25, -21.65)
CIE-LCH	lch(49.58, 25.38, 238.52°)
OKLab	oklab(55.98% -0.0563 -0.0604)
OKLCH	oklch(55.98% 0.083 227)
XYZ	xyz(14.8668, 18.0655, 33.2691)
Luminance	0.1807 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E9A #9A5337

analogous

#379A84 #377E9A #374C9A

triadic

#377E9A #9A377E #7E9A37

tetradic

#377E9A #84379A #9A5337 #4C9A37

square

#377E9A #84379A #9A5337 #4C9A37

split-complementary

#377E9A #9A374C #9A8437

monochromatic

#173440 #27596D #377E9A #4EA0C0 #7BB8D0

Accessibility & contrast

On white

4.55

#377E9A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#377E9A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377E9A

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E9A	#FFFFFF	#000000	##000000
##377E9A	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7C9B

Deuteranopia (green-blind)

#61719A

Tritanopia (blue-blind)

#008687

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377e9a;
/* rgb */ color: rgb(55, 126, 154);
/* oklch */ color: oklch(56.0% 0.083 227.0);

Tailwind

colors: {
  custom: {
    50: '#78a3b7',
    500: '#377e9a',
    950: '#000000',
  },
}

SCSS

$custom: #377e9a;
$custom-light: #78a3b7;
$custom-dark: #000000;

JSON

{
  "hex": "#377e9a",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 154
  },
  "hsl": {
    "h": 196.97,
    "s": 47.368,
    "l": 40.98
  },
  "oklch": {
    "l": 0.55982,
    "c": 0.08256,
    "h": 227
  },
  "luminance": 0.18067
}

Semantic roles & 50–950 ramp

primary

#377E9A

secondary

#B98774

accent

#7751D7

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377E9A

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

Preview Lab → · Contrast checker → · Palette generator →