#377BC3#377BC3

#377BC3 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.4% C 0.131 H 252.2°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#377BC3
RGB	rgb(55, 123, 195)
HSL	hsl(211, 56%, 49%)
HSV	hsv(211, 72%, 76%)
CMYK	cmyk(71.8%, 36.9%, 0%, 23.5%)
CIE-LAB	lab(50.59, 2.77, -43.79)
CIE-LCH	lch(50.59, 43.88, 273.62°)
OKLab	oklab(57.41% -0.0399 -0.1246)
OKLCH	oklch(57.41% 0.131 252.2)
XYZ	xyz(18.5052, 18.9162, 54.2951)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC3 #C37F37

analogous

#37C1C3 #377BC3 #3937C3

triadic

#377BC3 #C3377B #7BC337

tetradic

#377BC3 #C337C1 #C37F37 #37C339

square

#377BC3 #C337C1 #C37F37 #37C339

split-complementary

#377BC3 #C33937 #C1C337

monochromatic

#1C3F64 #2A5D93 #377BC3 #649AD3 #94B9E1

Accessibility & contrast

On white

4.39

#377BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#377BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC3

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC3	#FFFFFF	#000000	##000000
##377BC3	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C6

Deuteranopia (green-blind)

#4572C2

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377bc3;
/* rgb */ color: rgb(55, 123, 195);
/* oklch */ color: oklch(57.4% 0.131 252.2);

Tailwind

colors: {
  custom: {
    50: '#7fa0d5',
    500: '#377bc3',
    950: '#000000',
  },
}

SCSS

$custom: #377bc3;
$custom-light: #7fa0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc3",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 195
  },
  "hsl": {
    "h": 210.857,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57412,
    "c": 0.13086,
    "h": 252.2
  },
  "luminance": 0.18918
}

Semantic roles & 50–950 ramp

primary

#377BC3

secondary

#CCAC8A

accent

#9649DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC3

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

Preview Lab → · Contrast checker → · Palette generator →