#4143CF#4143CF

#4143CF is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.7% C 0.210 H 274.4°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#4143CF
RGB	rgb(65, 67, 207)
HSL	hsl(239, 60%, 53%)
HSV	hsv(239, 69%, 81%)
CMYK	cmyk(68.6%, 67.6%, 0%, 18.8%)
CIE-LAB	lab(37.19, 43.58, -72.32)
CIE-LCH	lch(37.19, 84.43, 301.07°)
OKLab	oklab(47.67% 0.0161 -0.2089)
OKLCH	oklch(47.67% 0.21 274.4)
XYZ	xyz(15.4459, 9.6417, 60.0664)
Luminance	0.0964 (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

#4143CF #CFCD41

analogous

#418ACF #4143CF #8641CF

triadic

#4143CF #CF4143 #43CF41

tetradic

#4143CF #CF418A #CFCD41 #41CF86

square

#4143CF #CF418A #CFCD41 #41CF86

split-complementary

#4143CF #CF8641 #8ACF41

monochromatic

#1E1F77 #2B2CA8 #4143CF #7273DB #A3A4E8

Accessibility & contrast

On white

7.17

#4143CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#4143CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4143CF

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4143CF	#FFFFFF	#000000	##FFFFFF
##4143CF	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED3

Deuteranopia (green-blind)

#0051CC

Tritanopia (blue-blind)

#006983

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4143cf;
/* rgb */ color: rgb(65, 67, 207);
/* oklch */ color: oklch(47.7% 0.210 274.4);

Tailwind

colors: {
  custom: {
    50: '#8878df',
    500: '#4143cf',
    950: '#000000',
  },
}

SCSS

$custom: #4143cf;
$custom-light: #8878df;
$custom-dark: #000000;

JSON

{
  "hex": "#4143cf",
  "rgb": {
    "r": 65,
    "g": 67,
    "b": 207
  },
  "hsl": {
    "h": 239.155,
    "s": 59.664,
    "l": 53.333
  },
  "oklch": {
    "l": 0.47665,
    "c": 0.20955,
    "h": 274.4
  },
  "luminance": 0.09643
}

Semantic roles & 50–950 ramp

primary

#4143CF

secondary

#D4D497

accent

#E145E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4143CF

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

Preview Lab → · Contrast checker → · Palette generator →