#377BCD#377BCD

#377BCD is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 58.0% C 0.144 H 254.9°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#377BCD
RGB	rgb(55, 123, 205)
HSL	hsl(213, 60%, 51%)
HSV	hsv(213, 73%, 80%)
CMYK	cmyk(73.2%, 40%, 0%, 19.6%)
CIE-LAB	lab(51.13, 6.40, -48.63)
CIE-LCH	lch(51.13, 49.05, 277.50°)
OKLab	oklab(58.01% -0.0375 -0.1388)
OKLCH	oklch(58.01% 0.144 254.9)
XYZ	xyz(19.6739, 19.3837, 60.4503)
Luminance	0.1939 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BCD #CD8937

analogous

#37C6CD #377BCD #3E37CD

triadic

#377BCD #CD377B #7BCD37

tetradic

#377BCD #CD37C6 #CD8937 #37CD3E

square

#377BCD #CD37C6 #CD8937 #37CD3E

split-complementary

#377BCD #CD3E37 #C6CD37

monochromatic

#1C416E #285E9F #377BCD #689BD9 #99BCE5

Accessibility & contrast

On white

4.31

#377BCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#377BCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BCD

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BCD	#FFFFFF	#000000	##000000
##377BCD	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5481D0

Deuteranopia (green-blind)

#3C73CB

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377bcd;
/* rgb */ color: rgb(55, 123, 205);
/* oklch */ color: oklch(58.0% 0.144 254.9);

Tailwind

colors: {
  custom: {
    50: '#81a0dd',
    500: '#377bcd',
    950: '#000000',
  },
}

SCSS

$custom: #377bcd;
$custom-light: #81a0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#377bcd",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 205
  },
  "hsl": {
    "h": 212.8,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.58013,
    "c": 0.14379,
    "h": 254.9
  },
  "luminance": 0.19386
}

Semantic roles & 50–950 ramp

primary

#377BCD

secondary

#D1B38F

accent

#9B45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377BCD

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

Preview Lab → · Contrast checker → · Palette generator →