#377BC8#377BC8

#377BC8 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.7% C 0.137 H 253.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#377BC8
RGB	rgb(55, 123, 200)
HSL	hsl(212, 57%, 50%)
HSV	hsv(212, 73%, 78%)
CMYK	cmyk(72.5%, 38.5%, 0%, 21.6%)
CIE-LAB	lab(50.86, 4.58, -46.22)
CIE-LCH	lch(50.86, 46.45, 275.66°)
OKLab	oklab(57.71% -0.0387 -0.1317)
OKLCH	oklch(57.71% 0.137 253.6)
XYZ	xyz(19.0800, 19.1462, 57.3224)
Luminance	0.1915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC8 #C88437

analogous

#37C4C8 #377BC8 #3B37C8

triadic

#377BC8 #C8377B #7BC837

tetradic

#377BC8 #C837C4 #C88437 #37C83B

square

#377BC8 #C837C4 #C88437 #37C83B

split-complementary

#377BC8 #C83B37 #C4C837

monochromatic

#1D4068 #2A5D98 #377BC8 #679BD5 #97BAE2

Accessibility & contrast

On white

4.35

#377BC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#377BC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC8

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC8	#FFFFFF	#000000	##000000
##377BC8	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5780CB

Deuteranopia (green-blind)

#4173C6

Tritanopia (blue-blind)

#008D98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bc8;
/* rgb */ color: rgb(55, 123, 200);
/* oklch */ color: oklch(57.7% 0.137 253.6);

Tailwind

colors: {
  custom: {
    50: '#80a0d9',
    500: '#377bc8',
    950: '#000000',
  },
}

SCSS

$custom: #377bc8;
$custom-light: #80a0d9;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc8",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 200
  },
  "hsl": {
    "h": 211.862,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.57709,
    "c": 0.1373,
    "h": 253.6
  },
  "luminance": 0.19148
}

Semantic roles & 50–950 ramp

primary

#377BC8

secondary

#CEAF8D

accent

#9948E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC8

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

Preview Lab → · Contrast checker → · Palette generator →