#3D81E4#3D81E4

#3D81E4 is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.0% C 0.165 H 258.1°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3D81E4
RGB	rgb(61, 129, 228)
HSL	hsl(216, 76%, 57%)
HSV	hsv(216, 73%, 89%)
CMYK	cmyk(73.2%, 43.4%, 0%, 10.6%)
CIE-LAB	lab(54.33, 11.86, -56.48)
CIE-LCH	lch(54.33, 57.71, 281.86°)
OKLab	oklab(60.98% -0.0342 -0.1617)
OKLCH	oklch(60.98% 0.165 258.1)
XYZ	xyz(23.7732, 22.2914, 76.4335)
Luminance	0.2229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D81E4 #E4A03D

analogous

#3DD5E4 #3D81E4 #4D3DE4

triadic

#3D81E4 #E43D81 #81E43D

tetradic

#3D81E4 #E43DD5 #E4A03D #3DE44D

square

#3D81E4 #E43DD5 #E4A03D #3DE44D

split-complementary

#3D81E4 #E44D3D #D5E43D

monochromatic

#144892 #1C62C8 #3D81E4 #73A4EB #A8C7F3

Accessibility & contrast

On white

3.85

#3D81E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#3D81E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3D81E4

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D81E4	#FFFFFF	#000000	##000000
##3D81E4	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#508AE8

Deuteranopia (green-blind)

#307BE2

Tritanopia (blue-blind)

#0098A7

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3d81e4;
/* rgb */ color: rgb(61, 129, 228);
/* oklch */ color: oklch(61.0% 0.165 258.1);

Tailwind

colors: {
  custom: {
    50: '#87a5ed',
    500: '#3d81e4',
    950: '#000000',
  },
}

SCSS

$custom: #3d81e4;
$custom-light: #87a5ed;
$custom-dark: #000000;

JSON

{
  "hex": "#3d81e4",
  "rgb": {
    "r": 61,
    "g": 129,
    "b": 228
  },
  "hsl": {
    "h": 215.569,
    "s": 75.566,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60979,
    "c": 0.16525,
    "h": 258.1
  },
  "luminance": 0.22294
}

Semantic roles & 50–950 ramp

primary

#3D81E4

secondary

#E1C59C

accent

#A536F2

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #3D81E4

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

Preview Lab → · Contrast checker → · Palette generator →