#377BC0#377BC0

#377BC0 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.127 H 251.3°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#377BC0
RGB	rgb(55, 123, 192)
HSL	hsl(210, 55%, 48%)
HSV	hsv(210, 71%, 75%)
CMYK	cmyk(71.4%, 35.9%, 0%, 24.7%)
CIE-LAB	lab(50.43, 1.69, -42.32)
CIE-LCH	lch(50.43, 42.35, 272.29°)
OKLab	oklab(57.24% -0.0407 -0.1203)
OKLCH	oklch(57.24% 0.127 251.3)
XYZ	xyz(18.1694, 18.7819, 52.5267)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC0 #C07C37

analogous

#37BFC0 #377BC0 #3737C0

triadic

#377BC0 #C0377B #7BC037

tetradic

#377BC0 #C037BF #C07C37 #37C037

square

#377BC0 #C037BF #C07C37 #37C037

split-complementary

#377BC0 #C03737 #BFC037

monochromatic

#1C3E61 #295D90 #377BC0 #629AD2 #92B8E0

Accessibility & contrast

On white

4.41

#377BC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#377BC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC0

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC0	#FFFFFF	#000000	##000000
##377BC0	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7FC3

Deuteranopia (green-blind)

#4872BF

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377bc0;
/* rgb */ color: rgb(55, 123, 192);
/* oklch */ color: oklch(57.2% 0.127 251.3);

Tailwind

colors: {
  custom: {
    50: '#7ea0d3',
    500: '#377bc0',
    950: '#000000',
  },
}

SCSS

$custom: #377bc0;
$custom-light: #7ea0d3;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc0",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 192
  },
  "hsl": {
    "h": 210.219,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57237,
    "c": 0.12701,
    "h": 251.3
  },
  "luminance": 0.18784
}

Semantic roles & 50–950 ramp

primary

#377BC0

secondary

#CBAA88

accent

#9449DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC0

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

Preview Lab → · Contrast checker → · Palette generator →