#3B81DA#3B81DA

#3B81DA is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.3% C 0.153 H 255.8°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#3B81DA
RGB	rgb(59, 129, 218)
HSL	hsl(214, 68%, 54%)
HSV	hsv(214, 73%, 85%)
CMYK	cmyk(72.9%, 40.8%, 0%, 14.5%)
CIE-LAB	lab(53.70, 7.99, -51.89)
CIE-LCH	lch(53.70, 52.50, 278.75°)
OKLab	oklab(60.28% -0.0375 -0.1482)
OKLCH	oklch(60.28% 0.153 255.8)
XYZ	xyz(22.3041, 21.6898, 69.3271)
Luminance	0.2169 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81DA #DA943B

analogous

#3BD0DA #3B81DA #453BDA

triadic

#3B81DA #DA3B81 #81DA3B

tetradic

#3B81DA #DA3BD0 #DA943B #3BDA45

square

#3B81DA #DA3BD0 #DA943B #3BDA45

split-complementary

#3B81DA #DA453B #D0DA3B

monochromatic

#194782 #2263B6 #3B81DA #6EA2E4 #A2C3ED

Accessibility & contrast

On white

3.93

#3B81DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#3B81DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81DA

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81DA	#FFFFFF	#000000	##000000
##3B81DA	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5688DE

Deuteranopia (green-blind)

#3C7AD8

Tritanopia (blue-blind)

#0096A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3b81da;
/* rgb */ color: rgb(59, 129, 218);
/* oklch */ color: oklch(60.3% 0.153 255.8);

Tailwind

colors: {
  custom: {
    50: '#85a5e6',
    500: '#3b81da',
    950: '#000000',
  },
}

SCSS

$custom: #3b81da;
$custom-light: #85a5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81da",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 218
  },
  "hsl": {
    "h": 213.585,
    "s": 68.24,
    "l": 54.314
  },
  "oklch": {
    "l": 0.6028,
    "c": 0.1529,
    "h": 255.8
  },
  "luminance": 0.21692
}

Semantic roles & 50–950 ramp

primary

#3B81DA

secondary

#DABC97

accent

#9E3DEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3B81DA

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

Preview Lab → · Contrast checker → · Palette generator →