#377BC4#377BC4

#377BC4 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.132 H 252.5°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#377BC4
RGB	rgb(55, 123, 196)
HSL	hsl(211, 56%, 49%)
HSV	hsv(211, 72%, 77%)
CMYK	cmyk(71.9%, 37.2%, 0%, 23.1%)
CIE-LAB	lab(50.64, 3.13, -44.28)
CIE-LCH	lch(50.64, 44.39, 274.05°)
OKLab	oklab(57.47% -0.0397 -0.126)
OKLCH	oklch(57.47% 0.132 252.5)
XYZ	xyz(18.6186, 18.9616, 54.8926)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BC4 #C48037

analogous

#37C2C4 #377BC4 #3A37C4

triadic

#377BC4 #C4377B #7BC437

tetradic

#377BC4 #C437C2 #C48037 #37C43A

square

#377BC4 #C437C2 #C48037 #37C43A

split-complementary

#377BC4 #C43A37 #C2C437

monochromatic

#1C3F64 #2A5D94 #377BC4 #659AD4 #94B9E1

Accessibility & contrast

On white

4.38

#377BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#377BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC4

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BC4	#FFFFFF	#000000	##000000
##377BC4	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C7

Deuteranopia (green-blind)

#4573C3

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bc4;
/* rgb */ color: rgb(55, 123, 196);
/* oklch */ color: oklch(57.5% 0.132 252.5);

Tailwind

colors: {
  custom: {
    50: '#7fa0d6',
    500: '#377bc4',
    950: '#000000',
  },
}

SCSS

$custom: #377bc4;
$custom-light: #7fa0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#377bc4",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 196
  },
  "hsl": {
    "h": 211.064,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57471,
    "c": 0.13214,
    "h": 252.5
  },
  "luminance": 0.18964
}

Semantic roles & 50–950 ramp

primary

#377BC4

secondary

#CCAD8B

accent

#9748DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377BC4

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

Preview Lab → · Contrast checker → · Palette generator →