#377ECA#377ECA

#377ECA is a mid, vivid cyan. Relative luminance 0.200; OKLCH L 58.5% C 0.137 H 252.6°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#377ECA
RGB	rgb(55, 126, 202)
HSL	hsl(211, 58%, 50%)
HSV	hsv(211, 73%, 79%)
CMYK	cmyk(72.8%, 37.6%, 0%, 20.8%)
CIE-LAB	lab(51.83, 3.48, -45.81)
CIE-LCH	lch(51.83, 45.94, 274.35°)
OKLab	oklab(58.51% -0.041 -0.1305)
OKLCH	oklch(58.51% 0.137 252.6)
XYZ	xyz(19.6931, 19.9960, 58.6874)
Luminance	0.2000 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ECA #CA8337

analogous

#37C8CA #377ECA #3937CA

triadic

#377ECA #CA377E #7ECA37

tetradic

#377ECA #CA37C8 #CA8337 #37CA39

square

#377ECA #CA37C8 #CA8337 #37CA39

split-complementary

#377ECA #CA3937 #C8CA37

monochromatic

#1C426A #29609B #377ECA #679DD7 #98BCE4

Accessibility & contrast

On white

4.20

#377ECA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#377ECA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ECA

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ECA	#FFFFFF	#000000	##000000
##377ECA	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B83CD

Deuteranopia (green-blind)

#4575C8

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377eca;
/* rgb */ color: rgb(55, 126, 202);
/* oklch */ color: oklch(58.5% 0.137 252.6);

Tailwind

colors: {
  custom: {
    50: '#80a2da',
    500: '#377eca',
    950: '#000000',
  },
}

SCSS

$custom: #377eca;
$custom-light: #80a2da;
$custom-dark: #000000;

JSON

{
  "hex": "#377eca",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 202
  },
  "hsl": {
    "h": 211.02,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.58506,
    "c": 0.13678,
    "h": 252.6
  },
  "luminance": 0.19998
}

Semantic roles & 50–950 ramp

primary

#377ECA

secondary

#CFB08E

accent

#9746E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377ECA

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

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