#3780CA#3780CA

#3780CA is a mid, vivid cyan. Relative luminance 0.205; OKLCH L 59.0% C 0.135 H 251.5°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#3780CA
RGB	rgb(55, 128, 202)
HSL	hsl(210, 58%, 50%)
HSV	hsv(210, 73%, 79%)
CMYK	cmyk(72.8%, 36.6%, 0%, 20.8%)
CIE-LAB	lab(52.41, 2.28, -44.89)
CIE-LCH	lch(52.41, 44.95, 272.90°)
OKLab	oklab(58.96% -0.0429 -0.1278)
OKLCH	oklch(58.96% 0.135 251.5)
XYZ	xyz(19.9514, 20.5126, 58.7735)
Luminance	0.2051 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780CA #CA8137

analogous

#37CACA #3780CA #3737CA

triadic

#3780CA #CA3780 #80CA37

tetradic

#3780CA #CA37CA #CA8137 #37CA37

square

#3780CA #CA37CA #CA8137 #37CA37

split-complementary

#3780CA #CA3737 #CACA37

monochromatic

#1C436A #29629B #3780CA #679FD7 #98BDE4

Accessibility & contrast

On white

4.12

#3780CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#3780CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780CA

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780CA	#FFFFFF	#000000	##000000
##3780CA	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E85CD

Deuteranopia (green-blind)

#4877C9

Tritanopia (blue-blind)

#00919B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3780ca;
/* rgb */ color: rgb(55, 128, 202);
/* oklch */ color: oklch(59.0% 0.135 251.5);

Tailwind

colors: {
  custom: {
    50: '#80a4da',
    500: '#3780ca',
    950: '#000000',
  },
}

SCSS

$custom: #3780ca;
$custom-light: #80a4da;
$custom-dark: #000000;

JSON

{
  "hex": "#3780ca",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 202
  },
  "hsl": {
    "h": 210.204,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.58959,
    "c": 0.13477,
    "h": 251.5
  },
  "luminance": 0.20515
}

Semantic roles & 50–950 ramp

primary

#3780CA

secondary

#CFAF8E

accent

#9446E1

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3780CA

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

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