#3D81CC#3D81CC

#3D81CC is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.5% C 0.134 H 252.9°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3D81CC
RGB	rgb(61, 129, 204)
HSL	hsl(211, 58%, 52%)
HSV	hsv(211, 70%, 80%)
CMYK	cmyk(70.1%, 36.8%, 0%, 20%)
CIE-LAB	lab(53.00, 3.25, -45.08)
CIE-LCH	lch(53.00, 45.19, 274.12°)
OKLab	oklab(59.51% -0.0394 -0.1282)
OKLCH	oklch(59.51% 0.134 252.9)
XYZ	xyz(20.6698, 21.0500, 60.0888)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D81CC #CC883D

analogous

#3DC8CC #3D81CC #413DCC

triadic

#3D81CC #CC3D81 #81CC3D

tetradic

#3D81CC #CC3DC8 #CC883D #3DCC41

square

#3D81CC #CC3DC8 #CC883D #3DCC41

split-complementary

#3D81CC #CC413D #C8CC3D

monochromatic

#1E4571 #2A63A1 #3D81CC #6DA0D9 #9EC0E5

Accessibility & contrast

On white

4.03

#3D81CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#3D81CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3D81CC

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D81CC	#FFFFFF	#000000	##000000
##3D81CC	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F86CF

Deuteranopia (green-blind)

#4A78CB

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3d81cc;
/* rgb */ color: rgb(61, 129, 204);
/* oklch */ color: oklch(59.5% 0.134 252.9);

Tailwind

colors: {
  custom: {
    50: '#83a5dc',
    500: '#3d81cc',
    950: '#000000',
  },
}

SCSS

$custom: #3d81cc;
$custom-light: #83a5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3d81cc",
  "rgb": {
    "r": 61,
    "g": 129,
    "b": 204
  },
  "hsl": {
    "h": 211.469,
    "s": 58.367,
    "l": 51.961
  },
  "oklch": {
    "l": 0.59512,
    "c": 0.13414,
    "h": 252.9
  },
  "luminance": 0.21052
}

Semantic roles & 50–950 ramp

primary

#3D81CC

secondary

#D2B493

accent

#9846E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3D81CC

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

Preview Lab → · Contrast checker → · Palette generator →