#377ACD#377ACD

#377ACD is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.8% C 0.145 H 255.3°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#377ACD
RGB	rgb(55, 122, 205)
HSL	hsl(213, 60%, 51%)
HSV	hsv(213, 73%, 80%)
CMYK	cmyk(73.2%, 40.5%, 0%, 19.6%)
CIE-LAB	lab(50.85, 7.02, -49.09)
CIE-LCH	lch(50.85, 49.59, 278.13°)
OKLab	oklab(57.79% -0.0366 -0.1402)
OKLCH	oklch(57.79% 0.145 255.3)
XYZ	xyz(19.5505, 19.1369, 60.4092)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ACD #CD8A37

analogous

#37C5CD #377ACD #3F37CD

triadic

#377ACD #CD377A #7ACD37

tetradic

#377ACD #CD37C5 #CD8A37 #37CD3F

square

#377ACD #CD37C5 #CD8A37 #37CD3F

split-complementary

#377ACD #CD3F37 #C5CD37

monochromatic

#1C406E #285D9F #377ACD #689BD9 #99BBE5

Accessibility & contrast

On white

4.35

#377ACD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#377ACD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ACD

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

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

#5381D0

Deuteranopia (green-blind)

#3A73CB

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377acd;
/* rgb */ color: rgb(55, 122, 205);
/* oklch */ color: oklch(57.8% 0.145 255.3);

Tailwind

colors: {
  custom: {
    50: '#819fdd',
    500: '#377acd',
    950: '#000000',
  },
}

SCSS

$custom: #377acd;
$custom-light: #819fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#377acd",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 205
  },
  "hsl": {
    "h": 213.2,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57791,
    "c": 0.14487,
    "h": 255.3
  },
  "luminance": 0.19139
}

Semantic roles & 50–950 ramp

primary

#377ACD

secondary

#D1B38F

accent

#9C45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377ACD

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

Preview Lab → · Contrast checker → · Palette generator →