#3788D3#3788D3

#3788D3 is a mid, vivid cyan. Relative luminance 0.231; OKLCH L 61.3% C 0.138 H 249.7°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#3788D3
RGB	rgb(55, 136, 211)
HSL	hsl(209, 64%, 52%)
HSV	hsv(209, 74%, 83%)
CMYK	cmyk(73.9%, 35.5%, 0%, 17.3%)
CIE-LAB	lab(55.20, 0.73, -45.57)
CIE-LCH	lch(55.20, 45.58, 270.92°)
OKLab	oklab(61.3% -0.0479 -0.1296)
OKLCH	oklch(61.3% 0.138 249.7)
XYZ	xyz(22.1331, 23.1212, 64.9117)
Luminance	0.2312 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3788D3 #D38237

analogous

#37D3D0 #3788D3 #373AD3

triadic

#3788D3 #D33788 #88D337

tetradic

#3788D3 #D037D3 #D38237 #3AD337

square

#3788D3 #D037D3 #D38237 #3AD337

split-complementary

#3788D3 #D3373A #D3D037

monochromatic

#1A4A76 #2569A8 #3788D3 #69A6DE #9BC4E9

Accessibility & contrast

On white

3.73

#3788D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#3788D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3788D3

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3788D3	#FFFFFF	#000000	##000000
##3788D3	1.00	3.73	5.62	5.62
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#668CD6

Deuteranopia (green-blind)

#4F7ED2

Tritanopia (blue-blind)

#009AA3

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3788d3;
/* rgb */ color: rgb(55, 136, 211);
/* oklch */ color: oklch(61.3% 0.138 249.7);

Tailwind

colors: {
  custom: {
    50: '#82aae1',
    500: '#3788d3',
    950: '#000000',
  },
}

SCSS

$custom: #3788d3;
$custom-light: #82aae1;
$custom-dark: #000000;

JSON

{
  "hex": "#3788d3",
  "rgb": {
    "r": 55,
    "g": 136,
    "b": 211
  },
  "hsl": {
    "h": 208.846,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61295,
    "c": 0.13821,
    "h": 249.7
  },
  "luminance": 0.23124
}

Semantic roles & 50–950 ramp

primary

#3788D3

secondary

#D5B291

accent

#9141E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3788D3

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

Preview Lab → · Contrast checker → · Palette generator →