#3781C7#3781C7

#3781C7 is a mid, vivid cyan. Relative luminance 0.206; OKLCH L 59.0% C 0.130 H 249.9°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3781C7
RGB	rgb(55, 129, 199)
HSL	hsl(209, 57%, 50%)
HSV	hsv(209, 72%, 78%)
CMYK	cmyk(72.4%, 35.2%, 0%, 22%)
CIE-LAB	lab(52.55, 0.59, -42.97)
CIE-LCH	lch(52.55, 42.98, 270.79°)
OKLab	oklab(59.01% -0.0446 -0.1221)
OKLCH	oklch(59.01% 0.13 249.9)
XYZ	xyz(19.7307, 20.6341, 56.9647)
Luminance	0.2064 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3781C7 #C77D37

analogous

#37C7C5 #3781C7 #3739C7

triadic

#3781C7 #C73781 #81C737

tetradic

#3781C7 #C537C7 #C77D37 #39C737

square

#3781C7 #C537C7 #C77D37 #39C737

split-complementary

#3781C7 #C73739 #C7C537

monochromatic

#1C4367 #2A6297 #3781C7 #669FD5 #96BDE2

Accessibility & contrast

On white

4.10

#3781C7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#3781C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3781C7

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3781C7	#FFFFFF	#000000	##000000
##3781C7	1.00	4.10	5.13	5.13
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6185CA

Deuteranopia (green-blind)

#4C77C6

Tritanopia (blue-blind)

#00929B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3781c7;
/* rgb */ color: rgb(55, 129, 199);
/* oklch */ color: oklch(59.0% 0.130 249.9);

Tailwind

colors: {
  custom: {
    50: '#80a5d8',
    500: '#3781c7',
    950: '#000000',
  },
}

SCSS

$custom: #3781c7;
$custom-light: #80a5d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3781c7",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 199
  },
  "hsl": {
    "h": 209.167,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.59014,
    "c": 0.13001,
    "h": 249.9
  },
  "luminance": 0.20636
}

Semantic roles & 50–950 ramp

primary

#3781C7

secondary

#CDAC8C

accent

#9248E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B0F14

muted

#7C7F83

Preview Lab

Preview with #3781C7

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

Preview Lab → · Contrast checker → · Palette generator →