#377BC7#377BC7

#377BC7 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.6% C 0.136 H 253.4°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#377BC7
RGB	rgb(55, 123, 199)
HSL	hsl(212, 57%, 50%)
HSV	hsv(212, 72%, 78%)
CMYK	cmyk(72.4%, 38.2%, 0%, 22%)
CIE-LAB	lab(50.80, 4.22, -45.74)
CIE-LCH	lch(50.80, 45.93, 275.27°)
OKLab	oklab(57.65% -0.0389 -0.1303)
OKLCH	oklch(57.65% 0.136 253.4)
XYZ	xyz(18.9635, 19.0996, 56.7089)
Luminance	0.1910 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC7 #C78337

analogous

#37C3C7 #377BC7 #3B37C7

triadic

#377BC7 #C7377B #7BC737

tetradic

#377BC7 #C737C3 #C78337 #37C73B

square

#377BC7 #C737C3 #C78337 #37C73B

split-complementary

#377BC7 #C73B37 #C3C737

monochromatic

#1C4067 #2A5D97 #377BC7 #669BD5 #96BAE2

Accessibility & contrast

On white

4.36

#377BC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#377BC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC7

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC7	#FFFFFF	#000000	##000000
##377BC7	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)

#5880CA

Deuteranopia (green-blind)

#4273C5

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bc7;
/* rgb */ color: rgb(55, 123, 199);
/* oklch */ color: oklch(57.6% 0.136 253.4);

Tailwind

colors: {
  custom: {
    50: '#80a0d8',
    500: '#377bc7',
    950: '#000000',
  },
}

SCSS

$custom: #377bc7;
$custom-light: #80a0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc7",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 199
  },
  "hsl": {
    "h": 211.667,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57649,
    "c": 0.13601,
    "h": 253.4
  },
  "luminance": 0.19102
}

Semantic roles & 50–950 ramp

primary

#377BC7

secondary

#CDAF8C

accent

#9848E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC7

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

Preview Lab → · Contrast checker → · Palette generator →