#377CC0#377CC0

#377CC0 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.126 H 250.7°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#377CC0
RGB	rgb(55, 124, 192)
HSL	hsl(210, 55%, 48%)
HSV	hsv(210, 71%, 75%)
CMYK	cmyk(71.4%, 35.4%, 0%, 24.7%)
CIE-LAB	lab(50.72, 1.08, -41.86)
CIE-LCH	lch(50.72, 41.87, 271.48°)
OKLab	oklab(57.47% -0.0417 -0.1189)
OKLCH	oklch(57.47% 0.126 250.7)
XYZ	xyz(18.2941, 19.0313, 52.5682)
Luminance	0.1903 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC0 #C07B37

analogous

#37C0BF #377CC0 #3737C0

triadic

#377CC0 #C0377C #7CC037

tetradic

#377CC0 #BF37C0 #C07B37 #37C037

square

#377CC0 #BF37C0 #C07B37 #37C037

split-complementary

#377CC0 #C03737 #C0BF37

monochromatic

#1C3F61 #295D90 #377CC0 #629BD2 #92B9E0

Accessibility & contrast

On white

4.37

#377CC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#377CC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC0

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC0	#FFFFFF	#000000	##000000
##377CC0	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D80C3

Deuteranopia (green-blind)

#4973BF

Tritanopia (blue-blind)

#008C95

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377cc0;
/* rgb */ color: rgb(55, 124, 192);
/* oklch */ color: oklch(57.5% 0.126 250.7);

Tailwind

colors: {
  custom: {
    50: '#7ea1d3',
    500: '#377cc0',
    950: '#000000',
  },
}

SCSS

$custom: #377cc0;
$custom-light: #7ea1d3;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc0",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 192
  },
  "hsl": {
    "h": 209.781,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57466,
    "c": 0.12603,
    "h": 250.7
  },
  "luminance": 0.19033
}

Semantic roles & 50–950 ramp

primary

#377CC0

secondary

#CBA988

accent

#9349DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC0

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

Preview Lab → · Contrast checker → · Palette generator →