#377E99#377E99

#377E99 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 55.9% C 0.082 H 226.1°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377E99
RGB	rgb(55, 126, 153)
HSL	hsl(197, 47%, 41%)
HSV	hsv(197, 64%, 60%)
CMYK	cmyk(64.1%, 17.6%, 0%, 40%)
CIE-LAB	lab(49.54, -13.58, -21.12)
CIE-LCH	lch(49.54, 25.11, 237.26°)
OKLab	oklab(55.94% -0.0566 -0.0589)
OKLCH	oklch(55.94% 0.082 226.1)
XYZ	xyz(14.7839, 18.0323, 32.8323)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E99 #995237

analogous

#379983 #377E99 #374D99

triadic

#377E99 #99377E #7E9937

tetradic

#377E99 #833799 #995237 #4D9937

square

#377E99 #833799 #995237 #4D9937

split-complementary

#377E99 #99374D #998337

monochromatic

#17343F #27596C #377E99 #4EA0BF #7BB8D0

Accessibility & contrast

On white

4.56

#377E99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#377E99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377E99

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E99	#FFFFFF	#000000	##000000
##377E99	1.00	4.56	4.61	4.61
#FFFFFF	4.56	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)

#6F7C9A

Deuteranopia (green-blind)

#627199

Tritanopia (blue-blind)

#008687

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377e99;
/* rgb */ color: rgb(55, 126, 153);
/* oklch */ color: oklch(55.9% 0.082 226.1);

Tailwind

colors: {
  custom: {
    50: '#78a3b7',
    500: '#377e99',
    950: '#000000',
  },
}

SCSS

$custom: #377e99;
$custom-light: #78a3b7;
$custom-dark: #000000;

JSON

{
  "hex": "#377e99",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 153
  },
  "hsl": {
    "h": 196.531,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.55936,
    "c": 0.08175,
    "h": 226.1
  },
  "luminance": 0.18034
}

Semantic roles & 50–950 ramp

primary

#377E99

secondary

#B98673

accent

#7651D7

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377E99

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

Preview Lab → · Contrast checker → · Palette generator →