#377ECD#377ECD

#377ECD is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.7% C 0.141 H 253.4°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#377ECD
RGB	rgb(55, 126, 205)
HSL	hsl(212, 60%, 51%)
HSV	hsv(212, 73%, 80%)
CMYK	cmyk(73.2%, 38.5%, 0%, 19.6%)
CIE-LAB	lab(51.99, 4.57, -47.26)
CIE-LCH	lch(51.99, 47.48, 275.52°)
OKLab	oklab(58.68% -0.0403 -0.1347)
OKLCH	oklch(58.68% 0.141 253.4)
XYZ	xyz(20.0517, 20.1395, 60.5763)
Luminance	0.2014 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ECD #CD8637

analogous

#37C9CD #377ECD #3B37CD

triadic

#377ECD #CD377E #7ECD37

tetradic

#377ECD #CD37C9 #CD8637 #37CD3B

square

#377ECD #CD37C9 #CD8637 #37CD3B

split-complementary

#377ECD #CD3B37 #C9CD37

monochromatic

#1C436E #28609F #377ECD #689ED9 #99BDE5

Accessibility & contrast

On white

4.18

#377ECD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#377ECD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ECD

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ECD	#FFFFFF	#000000	##000000
##377ECD	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5984D0

Deuteranopia (green-blind)

#4276CB

Tritanopia (blue-blind)

#00919B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377ecd;
/* rgb */ color: rgb(55, 126, 205);
/* oklch */ color: oklch(58.7% 0.141 253.4);

Tailwind

colors: {
  custom: {
    50: '#81a2dd',
    500: '#377ecd',
    950: '#000000',
  },
}

SCSS

$custom: #377ecd;
$custom-light: #81a2dd;
$custom-dark: #000000;

JSON

{
  "hex": "#377ecd",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 205
  },
  "hsl": {
    "h": 211.6,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.58685,
    "c": 0.14062,
    "h": 253.4
  },
  "luminance": 0.20142
}

Semantic roles & 50–950 ramp

primary

#377ECD

secondary

#D1B28F

accent

#9845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377ECD

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

Preview Lab → · Contrast checker → · Palette generator →