#377EC5#377EC5

#377EC5 is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.2% C 0.130 H 251.1°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#377EC5
RGB	rgb(55, 126, 197)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 77%)
CMYK	cmyk(72.1%, 36%, 0%, 22.7%)
CIE-LAB	lab(51.57, 1.68, -43.38)
CIE-LCH	lch(51.57, 43.41, 272.22°)
OKLab	oklab(58.21% -0.0423 -0.1234)
OKLCH	oklch(58.21% 0.13 251.1)
XYZ	xyz(19.1107, 19.7630, 55.6200)
Luminance	0.1976 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EC5 #C57E37

analogous

#37C5C5 #377EC5 #3737C5

triadic

#377EC5 #C5377E #7EC537

tetradic

#377EC5 #C537C5 #C57E37 #37C537

square

#377EC5 #C537C5 #C57E37 #37C537

split-complementary

#377EC5 #C53737 #C5C537

monochromatic

#1C4165 #2A5F95 #377EC5 #659DD4 #95BBE1

Accessibility & contrast

On white

4.24

#377EC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#377EC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EC5

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EC5	#FFFFFF	#000000	##000000
##377EC5	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E82C8

Deuteranopia (green-blind)

#4975C4

Tritanopia (blue-blind)

#008F98

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377ec5;
/* rgb */ color: rgb(55, 126, 197);
/* oklch */ color: oklch(58.2% 0.130 251.1);

Tailwind

colors: {
  custom: {
    50: '#7fa3d7',
    500: '#377ec5',
    950: '#000000',
  },
}

SCSS

$custom: #377ec5;
$custom-light: #7fa3d7;
$custom-dark: #000000;

JSON

{
  "hex": "#377ec5",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 197
  },
  "hsl": {
    "h": 210,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.58213,
    "c": 0.13041,
    "h": 251.1
  },
  "luminance": 0.19765
}

Semantic roles & 50–950 ramp

primary

#377EC5

secondary

#CDAC8B

accent

#9448E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #377EC5

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

Preview Lab → · Contrast checker → · Palette generator →