#3B81D8#3B81D8

#3B81D8 is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 60.2% C 0.150 H 255.4°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3B81D8
RGB	rgb(59, 129, 216)
HSL	hsl(213, 67%, 54%)
HSV	hsv(213, 73%, 85%)
CMYK	cmyk(72.7%, 40.3%, 0%, 15.3%)
CIE-LAB	lab(53.58, 7.27, -50.94)
CIE-LCH	lch(53.58, 51.46, 278.12°)
OKLab	oklab(60.16% -0.0379 -0.1454)
OKLCH	oklch(60.16% 0.15 255.4)
XYZ	xyz(22.0440, 21.5857, 67.9571)
Luminance	0.2159 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81D8 #D8923B

analogous

#3BD0D8 #3B81D8 #443BD8

triadic

#3B81D8 #D83B81 #81D83B

tetradic

#3B81D8 #D83BD0 #D8923B #3BD844

square

#3B81D8 #D83BD0 #D8923B #3BD844

split-complementary

#3B81D8 #D8443B #D0D83B

monochromatic

#19477F #2363B2 #3B81D8 #6EA2E2 #A1C3EC

Accessibility & contrast

On white

3.95

#3B81D8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3B81D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81D8

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81D8	#FFFFFF	#000000	##000000
##3B81D8	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5888DB

Deuteranopia (green-blind)

#3E79D6

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3b81d8;
/* rgb */ color: rgb(59, 129, 216);
/* oklch */ color: oklch(60.2% 0.150 255.4);

Tailwind

colors: {
  custom: {
    50: '#84a5e4',
    500: '#3b81d8',
    950: '#000000',
  },
}

SCSS

$custom: #3b81d8;
$custom-light: #84a5e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81d8",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 216
  },
  "hsl": {
    "h": 213.248,
    "s": 66.809,
    "l": 53.922
  },
  "oklch": {
    "l": 0.60157,
    "c": 0.15031,
    "h": 255.4
  },
  "luminance": 0.21588
}

Semantic roles & 50–950 ramp

primary

#3B81D8

secondary

#D9BB96

accent

#9D3EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3B81D8

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

Preview Lab → · Contrast checker → · Palette generator →