#4143D9#4143D9

#4143D9 is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.6% C 0.222 H 273.8°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#4143D9
RGB	rgb(65, 67, 217)
HSL	hsl(239, 67%, 55%)
HSV	hsv(239, 70%, 85%)
CMYK	cmyk(70%, 69.1%, 0%, 14.9%)
CIE-LAB	lab(38.10, 46.88, -76.58)
CIE-LCH	lch(38.10, 89.79, 301.47°)
OKLab	oklab(48.6% 0.0149 -0.2214)
OKLCH	oklch(48.6% 0.222 273.8)
XYZ	xyz(16.7073, 10.1463, 66.7101)
Luminance	0.1015 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.28

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4143D9 #D9D741

analogous

#418FD9 #4143D9 #8B41D9

triadic

#4143D9 #D94143 #43D941

tetradic

#4143D9 #D9418F #D9D741 #41D98B

square

#4143D9 #D9418F #D9D741 #41D98B

split-complementary

#4143D9 #D98B41 #8FD941

monochromatic

#1B1C85 #2527B8 #4143D9 #7475E3 #A7A8ED

Accessibility & contrast

On white

6.93

#4143D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#4143D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4143D9

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4143D9	#FFFFFF	#000000	##FFFFFF
##4143D9	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#0053D6

Tritanopia (blue-blind)

#006C89

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4143d9;
/* rgb */ color: rgb(65, 67, 217);
/* oklch */ color: oklch(48.6% 0.222 273.8);

Tailwind

colors: {
  custom: {
    50: '#8a78e6',
    500: '#4143d9',
    950: '#000000',
  },
}

SCSS

$custom: #4143d9;
$custom-light: #8a78e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4143d9",
  "rgb": {
    "r": 65,
    "g": 67,
    "b": 217
  },
  "hsl": {
    "h": 239.211,
    "s": 66.667,
    "l": 55.294
  },
  "oklch": {
    "l": 0.486,
    "c": 0.2219,
    "h": 273.8
  },
  "luminance": 0.10148
}

Semantic roles & 50–950 ramp

primary

#4143D9

secondary

#DBDA9B

accent

#E73EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #4143D9

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

Preview Lab → · Contrast checker → · Palette generator →