#3780B6#3780B6

#3780B6 is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.8% C 0.110 H 243.9°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3780B6
RGB	rgb(55, 128, 182)
HSL	hsl(206, 54%, 46%)
HSV	hsv(206, 70%, 71%)
CMYK	cmyk(69.8%, 29.7%, 0%, 28.6%)
CIE-LAB	lab(51.41, -4.85, -35.03)
CIE-LCH	lch(51.41, 35.37, 262.11°)
OKLab	oklab(57.85% -0.0486 -0.099)
OKLCH	oklch(57.85% 0.11 243.9)
XYZ	xyz(17.7350, 19.6260, 47.1004)
Luminance	0.1963 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780B6 #B66D37

analogous

#37B6AD #3780B6 #3741B6

triadic

#3780B6 #B63780 #80B637

tetradic

#3780B6 #AD37B6 #B66D37 #41B637

square

#3780B6 #AD37B6 #B66D37 #41B637

split-complementary

#3780B6 #B63741 #B6AD37

monochromatic

#1B3E58 #295F87 #3780B6 #5C9ECE #8BBADC

Accessibility & contrast

On white

4.26

#3780B6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3780B6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780B6

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780B6	#FFFFFF	#000000	##000000
##3780B6	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B8

Deuteranopia (green-blind)

#5675B5

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3780b6;
/* rgb */ color: rgb(55, 128, 182);
/* oklch */ color: oklch(57.8% 0.110 243.9);

Tailwind

colors: {
  custom: {
    50: '#7da4cc',
    500: '#3780b6',
    950: '#000000',
  },
}

SCSS

$custom: #3780b6;
$custom-light: #7da4cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3780b6",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 182
  },
  "hsl": {
    "h": 205.512,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57845,
    "c": 0.11025,
    "h": 243.9
  },
  "luminance": 0.19628
}

Semantic roles & 50–950 ramp

primary

#3780B6

secondary

#C69F82

accent

#894BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3780B6

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

Preview Lab → · Contrast checker → · Palette generator →