#4247DD#4247DD

#4247DD is a mid, highly saturated blue. Relative luminance 0.109; OKLCH L 49.6% C 0.222 H 273.4°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#4247DD
RGB	rgb(66, 71, 221)
HSL	hsl(238, 70%, 56%)
HSV	hsv(238, 70%, 87%)
CMYK	cmyk(70.1%, 67.9%, 0%, 13.3%)
CIE-LAB	lab(39.38, 45.98, -76.77)
CIE-LCH	lch(39.38, 89.49, 300.92°)
OKLab	oklab(49.65% 0.0131 -0.2219)
OKLCH	oklch(49.65% 0.222 273.4)
XYZ	xyz(17.5468, 10.8835, 69.5686)
Luminance	0.1089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4247DD #DDD842

analogous

#4294DD #4247DD #8B42DD

triadic

#4247DD #DD4247 #47DD42

tetradic

#4247DD #DD4294 #DDD842 #42DD8B

square

#4247DD #DD4294 #DDD842 #42DD8B

split-complementary

#4247DD #DD8B42 #94DD42

monochromatic

#191D8C #2227BF #4247DD #7679E6 #AAACF0

Accessibility & contrast

On white

6.61

#4247DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#4247DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4247DD

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4247DD	#FFFFFF	#000000	##FFFFFF
##4247DD	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064E2

Deuteranopia (green-blind)

#0055DA

Tritanopia (blue-blind)

#00708C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4247dd;
/* rgb */ color: rgb(66, 71, 221);
/* oklch */ color: oklch(49.6% 0.222 273.4);

Tailwind

colors: {
  custom: {
    50: '#8b7be9',
    500: '#4247dd',
    950: '#000000',
  },
}

SCSS

$custom: #4247dd;
$custom-light: #8b7be9;
$custom-dark: #000000;

JSON

{
  "hex": "#4247dd",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 221
  },
  "hsl": {
    "h": 238.065,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.49649,
    "c": 0.22231,
    "h": 273.4
  },
  "luminance": 0.10885
}

Semantic roles & 50–950 ramp

primary

#4247DD

secondary

#DDDB9D

accent

#E73BEC

background

#F9F7FE

surface

#F2EEFD

border

#CCC9D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4247DD

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

Preview Lab → · Contrast checker → · Palette generator →