#423DD9#423DD9

#423DD9 is a mid, highly saturated blue. Relative luminance 0.095; OKLCH L 47.8% C 0.228 H 274.9°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#423DD9
RGB	rgb(66, 61, 217)
HSL	hsl(242, 67%, 55%)
HSV	hsv(242, 72%, 85%)
CMYK	cmyk(69.6%, 71.9%, 0%, 14.9%)
CIE-LAB	lab(36.94, 50.38, -78.50)
CIE-LCH	lch(36.94, 93.28, 302.69°)
OKLab	oklab(47.78% 0.0194 -0.227)
OKLCH	oklch(47.78% 0.228 274.9)
XYZ	xyz(16.4358, 9.5039, 66.6005)
Luminance	0.0950 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.87

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423DD9 #D4D93D

analogous

#3D86D9 #423DD9 #903DD9

triadic

#423DD9 #D9423D #3DD942

tetradic

#423DD9 #D93D86 #D4D93D #3DD990

square

#423DD9 #D93D86 #D4D93D #3DD990

split-complementary

#423DD9 #D9903D #86D93D

monochromatic

#1D1982 #2824B5 #423DD9 #7470E3 #A6A3ED

Accessibility & contrast

On white

7.24

#423DD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#423DD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DD9

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DD9	#FFFFFF	#000000	##FFFFFF
##423DD9	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EDE

Deuteranopia (green-blind)

#0050D6

Tritanopia (blue-blind)

#006987

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #423dd9;
/* rgb */ color: rgb(66, 61, 217);
/* oklch */ color: oklch(47.8% 0.228 274.9);

Tailwind

colors: {
  custom: {
    50: '#8b74e6',
    500: '#423dd9',
    950: '#000000',
  },
}

SCSS

$custom: #423dd9;
$custom-light: #8b74e6;
$custom-dark: #000000;

JSON

{
  "hex": "#423dd9",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 217
  },
  "hsl": {
    "h": 241.923,
    "s": 67.241,
    "l": 54.51
  },
  "oklch": {
    "l": 0.47781,
    "c": 0.22779,
    "h": 274.9
  },
  "luminance": 0.09505
}

Semantic roles & 50–950 ramp

primary

#423DD9

secondary

#D8DA98

accent

#EA3EE5

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #423DD9

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

Preview Lab → · Contrast checker → · Palette generator →