#377ED1#377ED1

#377ED1 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.9% C 0.146 H 254.3°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#377ED1
RGB	rgb(55, 126, 209)
HSL	hsl(212, 63%, 52%)
HSV	hsv(212, 74%, 82%)
CMYK	cmyk(73.7%, 39.7%, 0%, 18%)
CIE-LAB	lab(52.21, 6.03, -49.18)
CIE-LCH	lch(52.21, 49.55, 276.99°)
OKLab	oklab(58.93% -0.0393 -0.1404)
OKLCH	oklch(58.93% 0.146 254.3)
XYZ	xyz(20.5408, 20.3351, 63.1517)
Luminance	0.2034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ED1 #D18A37

analogous

#37CBD1 #377ED1 #3D37D1

triadic

#377ED1 #D1377E #7ED137

tetradic

#377ED1 #D137CB #D18A37 #37D13D

square

#377ED1 #D137CB #D18A37 #37D13D

split-complementary

#377ED1 #D13D37 #CBD137

monochromatic

#1A4373 #2660A5 #377ED1 #699EDC #9BBEE8

Accessibility & contrast

On white

4.14

#377ED1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#377ED1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ED1

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ED1	#FFFFFF	#000000	##000000
##377ED1	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5784D4

Deuteranopia (green-blind)

#3E76CF

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #377ed1;
/* rgb */ color: rgb(55, 126, 209);
/* oklch */ color: oklch(58.9% 0.146 254.3);

Tailwind

colors: {
  custom: {
    50: '#81a2df',
    500: '#377ed1',
    950: '#000000',
  },
}

SCSS

$custom: #377ed1;
$custom-light: #81a2df;
$custom-dark: #000000;

JSON

{
  "hex": "#377ed1",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 209
  },
  "hsl": {
    "h": 212.338,
    "s": 62.602,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58927,
    "c": 0.14578,
    "h": 254.3
  },
  "luminance": 0.20337
}

Semantic roles & 50–950 ramp

primary

#377ED1

secondary

#D4B590

accent

#9A42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377ED1

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

Preview Lab → · Contrast checker → · Palette generator →