#4143EA#4143EA

#4143EA is a mid, highly saturated blue. Relative luminance 0.111; OKLCH L 50.2% C 0.242 H 272.9°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#4143EA
RGB	rgb(65, 67, 234)
HSL	hsl(239, 80%, 59%)
HSV	hsv(239, 72%, 92%)
CMYK	cmyk(72.2%, 71.4%, 0%, 8.2%)
CIE-LAB	lab(39.71, 52.40, -83.64)
CIE-LCH	lch(39.71, 98.69, 302.07°)
OKLab	oklab(50.23% 0.0124 -0.242)
OKLCH	oklch(50.23% 0.242 272.9)
XYZ	xyz(19.0334, 11.0767, 78.9609)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4143EA #EAE841

analogous

#4197EA #4143EA #9341EA

triadic

#4143EA #EA4143 #43EA41

tetradic

#4143EA #EA4197 #EAE841 #41EA93

square

#4143EA #EA4197 #EAE841 #41EA93

split-complementary

#4143EA #EA9341 #97EA41

monochromatic

#12139F #181AD6 #4143EA #787AF0 #AFB0F6

Accessibility & contrast

On white

6.53

#4143EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#4143EA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4143EA

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4143EA	#FFFFFF	#000000	##FFFFFF
##4143EA	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066EF

Deuteranopia (green-blind)

#0055E7

Tritanopia (blue-blind)

#007292

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4143ea;
/* rgb */ color: rgb(65, 67, 234);
/* oklch */ color: oklch(50.2% 0.242 272.9);

Tailwind

colors: {
  custom: {
    50: '#8e79f2',
    500: '#4143ea',
    950: '#000000',
  },
}

SCSS

$custom: #4143ea;
$custom-light: #8e79f2;
$custom-dark: #000000;

JSON

{
  "hex": "#4143ea",
  "rgb": {
    "r": 65,
    "g": 67,
    "b": 234
  },
  "hsl": {
    "h": 239.29,
    "s": 80.095,
    "l": 58.627
  },
  "oklch": {
    "l": 0.50234,
    "c": 0.24229,
    "h": 272.9
  },
  "luminance": 0.11079
}

Semantic roles & 50–950 ramp

primary

#4143EA

secondary

#E5E4A2

accent

#F431F7

background

#F9F7FF

surface

#F2EDFE

border

#CCC8D6

text

#0E0917

muted

#7E7B85

Preview Lab

Preview with #4143EA

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

Preview Lab → · Contrast checker → · Palette generator →