#377BC1#377BC1

#377BC1 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.128 H 251.6°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#377BC1
RGB	rgb(55, 123, 193)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 76%)
CMYK	cmyk(71.5%, 36.3%, 0%, 24.3%)
CIE-LAB	lab(50.48, 2.05, -42.81)
CIE-LCH	lch(50.48, 42.86, 272.74°)
OKLab	oklab(57.29% -0.0405 -0.1217)
OKLCH	oklch(57.29% 0.128 251.6)
XYZ	xyz(18.2806, 18.8264, 53.1122)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC1 #C17D37

analogous

#37C0C1 #377BC1 #3837C1

triadic

#377BC1 #C1377B #7BC137

tetradic

#377BC1 #C137C0 #C17D37 #37C138

square

#377BC1 #C137C0 #C17D37 #37C138

split-complementary

#377BC1 #C13837 #C0C137

monochromatic

#1C3E62 #295D91 #377BC1 #639AD2 #92B9E0

Accessibility & contrast

On white

4.41

#377BC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#377BC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC1

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC1	#FFFFFF	#000000	##000000
##377BC1	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7FC4

Deuteranopia (green-blind)

#4772C0

Tritanopia (blue-blind)

#008B95

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377bc1;
/* rgb */ color: rgb(55, 123, 193);
/* oklch */ color: oklch(57.3% 0.128 251.6);

Tailwind

colors: {
  custom: {
    50: '#7ea0d4',
    500: '#377bc1',
    950: '#000000',
  },
}

SCSS

$custom: #377bc1;
$custom-light: #7ea0d4;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc1",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 193
  },
  "hsl": {
    "h": 210.435,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.57295,
    "c": 0.1283,
    "h": 251.6
  },
  "luminance": 0.18828
}

Semantic roles & 50–950 ramp

primary

#377BC1

secondary

#CBAA89

accent

#9549DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC1

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

Preview Lab → · Contrast checker → · Palette generator →