#4281DF#4281DF

#4281DF is a mid, vivid blue. Relative luminance 0.222; OKLCH L 60.8% C 0.157 H 258.4°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#4281DF
RGB	rgb(66, 129, 223)
HSL	hsl(216, 71%, 57%)
HSV	hsv(216, 70%, 87%)
CMYK	cmyk(70.4%, 42.2%, 0%, 12.5%)
CIE-LAB	lab(54.22, 10.75, -53.85)
CIE-LCH	lch(54.22, 54.91, 281.28°)
OKLab	oklab(60.85% -0.0317 -0.1539)
OKLCH	oklch(60.85% 0.157 258.4)
XYZ	xyz(23.4115, 22.1840, 72.8458)
Luminance	0.2219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4281DF #DFA042

analogous

#42CFDF #4281DF #5242DF

triadic

#4281DF #DF4281 #81DF42

tetradic

#4281DF #DF42CF #DFA042 #42DF52

square

#4281DF #DF42CF #DFA042 #42DF52

split-complementary

#4281DF #DF5242 #CFDF42

monochromatic

#18488E #2162C3 #4281DF #76A4E8 #ABC7F1

Accessibility & contrast

On white

3.86

#4281DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#4281DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4281DF

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4281DF	#FFFFFF	#000000	##000000
##4281DF	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5489E3

Deuteranopia (green-blind)

#397BDD

Tritanopia (blue-blind)

#0097A5

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4281df;
/* rgb */ color: rgb(66, 129, 223);
/* oklch */ color: oklch(60.8% 0.157 258.4);

Tailwind

colors: {
  custom: {
    50: '#88a5e9',
    500: '#4281df',
    950: '#000000',
  },
}

SCSS

$custom: #4281df;
$custom-light: #88a5e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4281df",
  "rgb": {
    "r": 66,
    "g": 129,
    "b": 223
  },
  "hsl": {
    "h": 215.924,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60847,
    "c": 0.15711,
    "h": 258.4
  },
  "luminance": 0.22186
}

Semantic roles & 50–950 ramp

primary

#4281DF

secondary

#DFC59E

accent

#A63AEE

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4281DF

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

Preview Lab → · Contrast checker → · Palette generator →