#4282DD#4282DD

#4282DD is a mid, vivid blue. Relative luminance 0.223; OKLCH L 60.9% C 0.153 H 257.6°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#4282DD
RGB	rgb(66, 130, 221)
HSL	hsl(215, 70%, 56%)
HSV	hsv(215, 70%, 87%)
CMYK	cmyk(70.1%, 41.2%, 0%, 13.3%)
CIE-LAB	lab(54.39, 9.42, -52.46)
CIE-LCH	lch(54.39, 53.30, 280.18°)
OKLab	oklab(60.94% -0.033 -0.1498)
OKLCH	oklch(60.94% 0.153 257.6)
XYZ	xyz(23.2758, 22.3415, 71.4783)
Luminance	0.2234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4282DD #DD9D42

analogous

#42D0DD #4282DD #5042DD

triadic

#4282DD #DD4282 #82DD42

tetradic

#4282DD #DD42D0 #DD9D42 #42DD50

square

#4282DD #DD42D0 #DD9D42 #42DD50

split-complementary

#4282DD #DD5042 #D0DD42

monochromatic

#19488C #2263BF #4282DD #76A4E6 #AAC7F0

Accessibility & contrast

On white

3.84

#4282DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#4282DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4282DD

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4282DD	#FFFFFF	#000000	##000000
##4282DD	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#578AE1

Deuteranopia (green-blind)

#3D7BDB

Tritanopia (blue-blind)

#0097A5

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4282dd;
/* rgb */ color: rgb(66, 130, 221);
/* oklch */ color: oklch(60.9% 0.153 257.6);

Tailwind

colors: {
  custom: {
    50: '#88a5e8',
    500: '#4282dd',
    950: '#000000',
  },
}

SCSS

$custom: #4282dd;
$custom-light: #88a5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4282dd",
  "rgb": {
    "r": 66,
    "g": 130,
    "b": 221
  },
  "hsl": {
    "h": 215.226,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.60939,
    "c": 0.15339,
    "h": 257.6
  },
  "luminance": 0.22344
}

Semantic roles & 50–950 ramp

primary

#4282DD

secondary

#DDC39D

accent

#A33BEC

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4282DD

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

Preview Lab → · Contrast checker → · Palette generator →