#377EC0#377EC0

#377EC0 is a mid, vivid cyan. Relative luminance 0.195; OKLCH L 57.9% C 0.124 H 249.4°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#377EC0
RGB	rgb(55, 126, 192)
HSL	hsl(209, 55%, 48%)
HSV	hsv(209, 71%, 75%)
CMYK	cmyk(71.4%, 34.4%, 0%, 24.7%)
CIE-LAB	lab(51.31, -0.12, -40.93)
CIE-LCH	lch(51.31, 40.93, 269.83°)
OKLab	oklab(57.93% -0.0436 -0.1162)
OKLCH	oklch(57.93% 0.124 249.4)
XYZ	xyz(18.5473, 19.5377, 52.6526)
Luminance	0.1954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EC0 #C07937

analogous

#37C0BD #377EC0 #3739C0

triadic

#377EC0 #C0377E #7EC037

tetradic

#377EC0 #BD37C0 #C07937 #39C037

square

#377EC0 #BD37C0 #C07937 #39C037

split-complementary

#377EC0 #C03739 #C0BD37

monochromatic

#1C4061 #295F90 #377EC0 #629CD2 #92BAE0

Accessibility & contrast

On white

4.28

#377EC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#377EC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EC0

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EC0	#FFFFFF	#000000	##000000
##377EC0	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6081C3

Deuteranopia (green-blind)

#4D74BF

Tritanopia (blue-blind)

#008E96

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377ec0;
/* rgb */ color: rgb(55, 126, 192);
/* oklch */ color: oklch(57.9% 0.124 249.4);

Tailwind

colors: {
  custom: {
    50: '#7ea3d3',
    500: '#377ec0',
    950: '#000000',
  },
}

SCSS

$custom: #377ec0;
$custom-light: #7ea3d3;
$custom-dark: #000000;

JSON

{
  "hex": "#377ec0",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 192
  },
  "hsl": {
    "h": 208.905,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57926,
    "c": 0.12412,
    "h": 249.4
  },
  "luminance": 0.1954
}

Semantic roles & 50–950 ramp

primary

#377EC0

secondary

#CBA888

accent

#9149DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #377EC0

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

Preview Lab → · Contrast checker → · Palette generator →