#377EC7#377EC7

#377EC7 is a mid, vivid cyan. Relative luminance 0.199; OKLCH L 58.3% C 0.133 H 251.7°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#377EC7
RGB	rgb(55, 126, 199)
HSL	hsl(210, 57%, 50%)
HSV	hsv(210, 72%, 78%)
CMYK	cmyk(72.4%, 36.7%, 0%, 22%)
CIE-LAB	lab(51.67, 2.40, -44.36)
CIE-LCH	lch(51.67, 44.42, 273.10°)
OKLab	oklab(58.33% -0.0417 -0.1262)
OKLCH	oklch(58.33% 0.133 251.7)
XYZ	xyz(19.3414, 19.8553, 56.8349)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EC7 #C78037

analogous

#37C6C7 #377EC7 #3837C7

triadic

#377EC7 #C7377E #7EC737

tetradic

#377EC7 #C737C6 #C78037 #37C738

square

#377EC7 #C737C6 #C78037 #37C738

split-complementary

#377EC7 #C73837 #C6C737

monochromatic

#1C4167 #2A6097 #377EC7 #669DD5 #96BCE2

Accessibility & contrast

On white

4.22

#377EC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#377EC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EC7

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EC7	#FFFFFF	#000000	##000000
##377EC7	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D82CA

Deuteranopia (green-blind)

#4775C6

Tritanopia (blue-blind)

#008F99

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377ec7;
/* rgb */ color: rgb(55, 126, 199);
/* oklch */ color: oklch(58.3% 0.133 251.7);

Tailwind

colors: {
  custom: {
    50: '#80a3d8',
    500: '#377ec7',
    950: '#000000',
  },
}

SCSS

$custom: #377ec7;
$custom-light: #80a3d8;
$custom-dark: #000000;

JSON

{
  "hex": "#377ec7",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 199
  },
  "hsl": {
    "h": 210.417,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.58329,
    "c": 0.13295,
    "h": 251.7
  },
  "luminance": 0.19857
}

Semantic roles & 50–950 ramp

primary

#377EC7

secondary

#CDAD8C

accent

#9548E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #377EC7

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

Preview Lab → · Contrast checker → · Palette generator →