#377CC4#377CC4

#377CC4 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.7% C 0.131 H 251.9°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#377CC4
RGB	rgb(55, 124, 196)
HSL	hsl(211, 56%, 49%)
HSV	hsv(211, 72%, 77%)
CMYK	cmyk(71.9%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(50.93, 2.53, -43.82)
CIE-LCH	lch(50.93, 43.89, 273.30°)
OKLab	oklab(57.7% -0.0406 -0.1247)
OKLCH	oklch(57.7% 0.131 251.9)
XYZ	xyz(18.7433, 19.2110, 54.9341)
Luminance	0.1921 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC4 #C47F37

analogous

#37C3C4 #377CC4 #3937C4

triadic

#377CC4 #C4377C #7CC437

tetradic

#377CC4 #C437C3 #C47F37 #37C439

square

#377CC4 #C437C3 #C47F37 #37C439

split-complementary

#377CC4 #C43937 #C3C437

monochromatic

#1C4064 #2A5E94 #377CC4 #659BD4 #94BAE1

Accessibility & contrast

On white

4.34

#377CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#377CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC4

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC4	#FFFFFF	#000000	##000000
##377CC4	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B80C7

Deuteranopia (green-blind)

#4673C3

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377cc4;
/* rgb */ color: rgb(55, 124, 196);
/* oklch */ color: oklch(57.7% 0.131 251.9);

Tailwind

colors: {
  custom: {
    50: '#7fa1d6',
    500: '#377cc4',
    950: '#000000',
  },
}

SCSS

$custom: #377cc4;
$custom-light: #7fa1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc4",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 210.638,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57698,
    "c": 0.13113,
    "h": 251.9
  },
  "luminance": 0.19213
}

Semantic roles & 50–950 ramp

primary

#377CC4

secondary

#CCAC8B

accent

#9648DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC4

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

Preview Lab → · Contrast checker → · Palette generator →