#377E9D#377E9D

#377E9D is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.1% C 0.085 H 229.7°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377E9D
RGB	rgb(55, 126, 157)
HSL	hsl(198, 48%, 42%)
HSV	hsv(198, 65%, 62%)
CMYK	cmyk(65%, 19.7%, 0%, 38.4%)
CIE-LAB	lab(49.70, -12.26, -23.21)
CIE-LCH	lch(49.70, 26.25, 242.15°)
OKLab	oklab(56.12% -0.0551 -0.0649)
OKLCH	oklch(56.12% 0.085 229.7)
XYZ	xyz(15.1198, 18.1667, 34.6014)
Luminance	0.1817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E9D #9D5637

analogous

#379D89 #377E9D #374B9D

triadic

#377E9D #9D377E #7E9D37

tetradic

#377E9D #89379D #9D5637 #4B9D37

square

#377E9D #89379D #9D5637 #4B9D37

split-complementary

#377E9D #9D374B #9D8937

monochromatic

#173542 #275A70 #377E9D #509FC2 #7DB8D1

Accessibility & contrast

On white

4.53

#377E9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#377E9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377E9D

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E9D	#FFFFFF	#000000	##000000
##377E9D	1.00	4.53	4.63	4.63
#FFFFFF	4.53	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)

#6E7C9F

Deuteranopia (green-blind)

#60729D

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377e9d;
/* rgb */ color: rgb(55, 126, 157);
/* oklch */ color: oklch(56.1% 0.085 229.7);

Tailwind

colors: {
  custom: {
    50: '#79a3ba',
    500: '#377e9d',
    950: '#000000',
  },
}

SCSS

$custom: #377e9d;
$custom-light: #79a3ba;
$custom-dark: #000000;

JSON

{
  "hex": "#377e9d",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 157
  },
  "hsl": {
    "h": 198.235,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.5612,
    "c": 0.08514,
    "h": 229.7
  },
  "luminance": 0.18168
}

Semantic roles & 50–950 ramp

primary

#377E9D

secondary

#BB8A75

accent

#7950D8

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377E9D

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

Preview Lab → · Contrast checker → · Palette generator →