#377BC5#377BC5

#377BC5 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.133 H 252.8°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#377BC5
RGB	rgb(55, 123, 197)
HSL	hsl(211, 56%, 49%)
HSV	hsv(211, 72%, 77%)
CMYK	cmyk(72.1%, 37.6%, 0%, 22.7%)
CIE-LAB	lab(50.70, 3.50, -44.76)
CIE-LCH	lch(50.70, 44.90, 274.46°)
OKLab	oklab(57.53% -0.0394 -0.1275)
OKLCH	oklch(57.53% 0.133 252.8)
XYZ	xyz(18.7328, 19.0073, 55.4940)
Luminance	0.1901 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC5 #C58137

analogous

#37C2C5 #377BC5 #3A37C5

triadic

#377BC5 #C5377B #7BC537

tetradic

#377BC5 #C537C2 #C58137 #37C53A

square

#377BC5 #C537C2 #C58137 #37C53A

split-complementary

#377BC5 #C53A37 #C2C537

monochromatic

#1C3F65 #2A5D95 #377BC5 #659AD4 #95BAE1

Accessibility & contrast

On white

4.37

#377BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#377BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC5

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC5	#FFFFFF	#000000	##000000
##377BC5	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5980C8

Deuteranopia (green-blind)

#4473C4

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bc5;
/* rgb */ color: rgb(55, 123, 197);
/* oklch */ color: oklch(57.5% 0.133 252.8);

Tailwind

colors: {
  custom: {
    50: '#7fa0d7',
    500: '#377bc5',
    950: '#000000',
  },
}

SCSS

$custom: #377bc5;
$custom-light: #7fa0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc5",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 197
  },
  "hsl": {
    "h": 211.268,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5753,
    "c": 0.13343,
    "h": 252.8
  },
  "luminance": 0.19009
}

Semantic roles & 50–950 ramp

primary

#377BC5

secondary

#CDAD8B

accent

#9748E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC5

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

Preview Lab → · Contrast checker → · Palette generator →