#3B81D2#3B81D2

#3B81D2 is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.8% C 0.143 H 254.0°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#3B81D2
RGB	rgb(59, 129, 210)
HSL	hsl(212, 63%, 53%)
HSV	hsv(212, 72%, 82%)
CMYK	cmyk(71.9%, 38.6%, 0%, 17.6%)
CIE-LAB	lab(53.26, 5.10, -48.08)
CIE-LCH	lch(53.26, 48.35, 276.06°)
OKLab	oklab(59.79% -0.0393 -0.137)
OKLCH	oklch(59.79% 0.143 254)
XYZ	xyz(21.2824, 21.2811, 63.9463)
Luminance	0.2128 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81D2 #D28C3B

analogous

#3BCDD2 #3B81D2 #403BD2

triadic

#3B81D2 #D23B81 #81D23B

tetradic

#3B81D2 #D23BCD #D28C3B #3BD240

square

#3B81D2 #D23BCD #D28C3B #3BD240

split-complementary

#3B81D2 #D2403B #CDD23B

monochromatic

#1B4677 #2763A9 #3B81D2 #6DA1DD #9FC1E9

Accessibility & contrast

On white

3.99

#3B81D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#3B81D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81D2

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81D2	#FFFFFF	#000000	##000000
##3B81D2	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B87D5

Deuteranopia (green-blind)

#4479D0

Tritanopia (blue-blind)

#00949F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3b81d2;
/* rgb */ color: rgb(59, 129, 210);
/* oklch */ color: oklch(59.8% 0.143 254.0);

Tailwind

colors: {
  custom: {
    50: '#83a5e0',
    500: '#3b81d2',
    950: '#000000',
  },
}

SCSS

$custom: #3b81d2;
$custom-light: #83a5e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81d2",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 210
  },
  "hsl": {
    "h": 212.185,
    "s": 62.656,
    "l": 52.745
  },
  "oklch": {
    "l": 0.59794,
    "c": 0.14256,
    "h": 254
  },
  "luminance": 0.21283
}

Semantic roles & 50–950 ramp

primary

#3B81D2

secondary

#D5B794

accent

#9A42E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3B81D2

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

Preview Lab → · Contrast checker → · Palette generator →