#4138CF#4138CF

#4138CF is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 46.0% C 0.221 H 275.9°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#4138CF
RGB	rgb(65, 56, 207)
HSL	hsl(244, 61%, 52%)
HSV	hsv(244, 73%, 81%)
CMYK	cmyk(68.6%, 72.9%, 0%, 18.8%)
CIE-LAB	lab(34.91, 49.86, -76.06)
CIE-LCH	lch(34.91, 90.95, 303.24°)
OKLab	oklab(46.03% 0.0228 -0.2198)
OKLCH	oklch(46.03% 0.221 275.9)
XYZ	xyz(14.8529, 8.4558, 59.8688)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.42

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4138CF #C6CF38

analogous

#387BCF #4138CF #8D38CF

triadic

#4138CF #CF4138 #38CF41

tetradic

#4138CF #CF387B #C6CF38 #38CF8D

square

#4138CF #CF387B #C6CF38 #38CF8D

split-complementary

#4138CF #CF8D38 #7BCF38

monochromatic

#201B71 #2F27A3 #4138CF #7069DB #9F9BE7

Accessibility & contrast

On white

7.80

#4138CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4138CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4138CF

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4138CF	#FFFFFF	#000000	##FFFFFF
##4138CF	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D3

Deuteranopia (green-blind)

#004BCC

Tritanopia (blue-blind)

#006380

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4138cf;
/* rgb */ color: rgb(65, 56, 207);
/* oklch */ color: oklch(46.0% 0.221 275.9);

Tailwind

colors: {
  custom: {
    50: '#8971df',
    500: '#4138cf',
    950: '#000000',
  },
}

SCSS

$custom: #4138cf;
$custom-light: #8971df;
$custom-dark: #000000;

JSON

{
  "hex": "#4138cf",
  "rgb": {
    "r": 65,
    "g": 56,
    "b": 207
  },
  "hsl": {
    "h": 243.576,
    "s": 61.134,
    "l": 51.569
  },
  "oklch": {
    "l": 0.46033,
    "c": 0.22102,
    "h": 275.9
  },
  "luminance": 0.08457
}

Semantic roles & 50–950 ramp

primary

#4138CF

secondary

#CFD390

accent

#E444DB

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4138CF

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

Preview Lab → · Contrast checker → · Palette generator →