#4243D3#4243D3

#4243D3 is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 48.1% C 0.214 H 274.5°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#4243D3
RGB	rgb(66, 67, 211)
HSL	hsl(240, 62%, 54%)
HSV	hsv(240, 69%, 83%)
CMYK	cmyk(68.7%, 68.2%, 0%, 17.3%)
CIE-LAB	lab(37.62, 45.02, -73.93)
CIE-LCH	lch(37.62, 86.56, 301.34°)
OKLab	oklab(48.1% 0.0168 -0.2136)
OKLCH	oklch(48.1% 0.214 274.5)
XYZ	xyz(16.0079, 9.8742, 62.6777)
Luminance	0.0988 (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

#4243D3 #D3D242

analogous

#428CD3 #4243D3 #8A42D3

triadic

#4243D3 #D34243 #43D342

tetradic

#4243D3 #D3428C #D3D242 #42D38A

square

#4243D3 #D3428C #D3D242 #42D38A

split-complementary

#4243D3 #D38A42 #8CD342

monochromatic

#1D1E7D #292AAF #4243D3 #7474DF #A5A6EA

Accessibility & contrast

On white

7.06

#4243D3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#4243D3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243D3

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243D3	#FFFFFF	#000000	##FFFFFF
##4243D3	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD7

Deuteranopia (green-blind)

#0052D0

Tritanopia (blue-blind)

#006A86

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4243d3;
/* rgb */ color: rgb(66, 67, 211);
/* oklch */ color: oklch(48.1% 0.214 274.5);

Tailwind

colors: {
  custom: {
    50: '#8978e2',
    500: '#4243d3',
    950: '#000000',
  },
}

SCSS

$custom: #4243d3;
$custom-light: #8978e2;
$custom-dark: #000000;

JSON

{
  "hex": "#4243d3",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 211
  },
  "hsl": {
    "h": 239.586,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.48098,
    "c": 0.21428,
    "h": 274.5
  },
  "luminance": 0.09876
}

Semantic roles & 50–950 ramp

primary

#4243D3

secondary

#D7D79A

accent

#E442E5

background

#F9F7FE

surface

#F1EDFC

border

#CBC8D5

text

#0D0915

muted

#7E7B84

Preview Lab

Preview with #4243D3

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

Preview Lab → · Contrast checker → · Palette generator →