#377CC1#377CC1

#377CC1 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.127 H 251.0°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#377CC1
RGB	rgb(55, 124, 193)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 76%)
CMYK	cmyk(71.5%, 35.8%, 0%, 24.3%)
CIE-LAB	lab(50.78, 1.44, -42.35)
CIE-LCH	lch(50.78, 42.37, 271.95°)
OKLab	oklab(57.52% -0.0414 -0.1204)
OKLCH	oklch(57.52% 0.127 251)
XYZ	xyz(18.4052, 19.0758, 53.1537)
Luminance	0.1908 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC1 #C17C37

analogous

#37C1C1 #377CC1 #3737C1

triadic

#377CC1 #C1377C #7CC137

tetradic

#377CC1 #C137C1 #C17C37 #37C137

square

#377CC1 #C137C1 #C17C37 #37C137

split-complementary

#377CC1 #C13737 #C1C137

monochromatic

#1C3F62 #295D91 #377CC1 #639BD2 #92B9E0

Accessibility & contrast

On white

4.36

#377CC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#377CC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC1

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC1	#FFFFFF	#000000	##000000
##377CC1	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D80C4

Deuteranopia (green-blind)

#4973C0

Tritanopia (blue-blind)

#008C95

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377cc1;
/* rgb */ color: rgb(55, 124, 193);
/* oklch */ color: oklch(57.5% 0.127 251.0);

Tailwind

colors: {
  custom: {
    50: '#7fa1d4',
    500: '#377cc1',
    950: '#000000',
  },
}

SCSS

$custom: #377cc1;
$custom-light: #7fa1d4;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc1",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 193
  },
  "hsl": {
    "h": 210,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.57524,
    "c": 0.12731,
    "h": 251
  },
  "luminance": 0.19078
}

Semantic roles & 50–950 ramp

primary

#377CC1

secondary

#CBAA89

accent

#9449DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC1

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

Preview Lab → · Contrast checker → · Palette generator →