#3B81DF#3B81DF

#3B81DF is a mid, vivid cyan. Relative luminance 0.220; OKLCH L 60.6% C 0.159 H 256.8°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#3B81DF
RGB	rgb(59, 129, 223)
HSL	hsl(214, 72%, 55%)
HSV	hsv(214, 74%, 87%)
CMYK	cmyk(73.5%, 42.2%, 0%, 12.5%)
CIE-LAB	lab(53.98, 9.80, -54.25)
CIE-LCH	lch(53.98, 55.13, 280.24°)
OKLab	oklab(60.59% -0.0364 -0.1552)
OKLCH	oklch(60.59% 0.159 256.8)
XYZ	xyz(22.9683, 21.9555, 72.8251)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B81DF #DF993B

analogous

#3BD3DF #3B81DF #473BDF

triadic

#3B81DF #DF3B81 #81DF3B

tetradic

#3B81DF #DF3BD3 #DF993B #3BDF47

square

#3B81DF #DF3BD3 #DF993B #3BDF47

split-complementary

#3B81DF #DF473B #D3DF3B

monochromatic

#164789 #1F63BE #3B81DF #70A3E8 #A4C5F0

Accessibility & contrast

On white

3.89

#3B81DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#3B81DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B81DF

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B81DF	#FFFFFF	#000000	##000000
##3B81DF	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5389E3

Deuteranopia (green-blind)

#367ADD

Tritanopia (blue-blind)

#0097A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3b81df;
/* rgb */ color: rgb(59, 129, 223);
/* oklch */ color: oklch(60.6% 0.159 256.8);

Tailwind

colors: {
  custom: {
    50: '#86a5e9',
    500: '#3b81df',
    950: '#000000',
  },
}

SCSS

$custom: #3b81df;
$custom-light: #86a5e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3b81df",
  "rgb": {
    "r": 59,
    "g": 129,
    "b": 223
  },
  "hsl": {
    "h": 214.39,
    "s": 71.93,
    "l": 55.294
  },
  "oklch": {
    "l": 0.60592,
    "c": 0.15938,
    "h": 256.8
  },
  "luminance": 0.21958
}

Semantic roles & 50–950 ramp

primary

#3B81DF

secondary

#DDC099

accent

#A139EF

background

#F8FAFE

surface

#F0F4FD

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3B81DF

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

Preview Lab → · Contrast checker → · Palette generator →