#3780D4#3780D4

#3780D4 is a mid, vivid cyan. Relative luminance 0.210; OKLCH L 59.6% C 0.148 H 254.1°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3780D4
RGB	rgb(55, 128, 212)
HSL	hsl(212, 65%, 52%)
HSV	hsv(212, 74%, 83%)
CMYK	cmyk(74.1%, 39.6%, 0%, 16.9%)
CIE-LAB	lab(52.95, 5.90, -49.70)
CIE-LCH	lch(52.95, 50.05, 276.77°)
OKLab	oklab(59.56% -0.0404 -0.1419)
OKLCH	oklch(59.56% 0.148 254.1)
XYZ	xyz(21.1740, 21.0016, 65.2124)
Luminance	0.2100 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780D4 #D48B37

analogous

#37CED4 #3780D4 #3D37D4

triadic

#3780D4 #D43780 #80D437

tetradic

#3780D4 #D437CE #D48B37 #37D43D

square

#3780D4 #D437CE #D48B37 #37D43D

split-complementary

#3780D4 #D43D37 #CED437

monochromatic

#1A4577 #2462A9 #3780D4 #69A0DF #9CC0EA

Accessibility & contrast

On white

4.04

#3780D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#3780D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780D4

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780D4	#FFFFFF	#000000	##000000
##3780D4	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5886D7

Deuteranopia (green-blind)

#3F78D2

Tritanopia (blue-blind)

#0094A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3780d4;
/* rgb */ color: rgb(55, 128, 212);
/* oklch */ color: oklch(59.6% 0.148 254.1);

Tailwind

colors: {
  custom: {
    50: '#82a4e2',
    500: '#3780d4',
    950: '#000000',
  },
}

SCSS

$custom: #3780d4;
$custom-light: #82a4e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3780d4",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 212
  },
  "hsl": {
    "h": 212.102,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.59556,
    "c": 0.14752,
    "h": 254.1
  },
  "luminance": 0.21004
}

Semantic roles & 50–950 ramp

primary

#3780D4

secondary

#D6B691

accent

#9A40E8

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3780D4

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

Preview Lab → · Contrast checker → · Palette generator →