#3780DA#3780DA

#3780DA is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.9% C 0.155 H 255.4°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#3780DA
RGB	rgb(55, 128, 218)
HSL	hsl(213, 69%, 54%)
HSV	hsv(213, 75%, 85%)
CMYK	cmyk(74.8%, 41.3%, 0%, 14.5%)
CIE-LAB	lab(53.29, 8.09, -52.55)
CIE-LCH	lch(53.29, 53.17, 278.75°)
OKLab	oklab(59.93% -0.0391 -0.1502)
OKLCH	oklch(59.93% 0.155 255.4)
XYZ	xyz(21.9449, 21.3100, 69.2727)
Luminance	0.2131 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780DA #DA9137

analogous

#37D1DA #3780DA #3F37DA

triadic

#3780DA #DA3780 #80DA37

tetradic

#3780DA #DA37D1 #DA9137 #37DA3F

square

#3780DA #DA37D1 #DA9137 #37DA3F

split-complementary

#3780DA #DA3F37 #D1DA37

monochromatic

#18467F #2162B3 #3780DA #6BA1E4 #9EC2ED

Accessibility & contrast

On white

3.99

#3780DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#3780DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780DA

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780DA	#FFFFFF	#000000	##000000
##3780DA	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5487DE

Deuteranopia (green-blind)

#3878D8

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3780da;
/* rgb */ color: rgb(55, 128, 218);
/* oklch */ color: oklch(59.9% 0.155 255.4);

Tailwind

colors: {
  custom: {
    50: '#83a4e6',
    500: '#3780da',
    950: '#000000',
  },
}

SCSS

$custom: #3780da;
$custom-light: #83a4e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3780da",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 218
  },
  "hsl": {
    "h": 213.129,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59926,
    "c": 0.15525,
    "h": 255.4
  },
  "luminance": 0.21313
}

Semantic roles & 50–950 ramp

primary

#3780DA

secondary

#D9BA93

accent

#9D3CEC

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3780DA

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

Preview Lab → · Contrast checker → · Palette generator →