#4140BC#4140BC

#4140BC is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.189 H 276.2°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#4140BC
RGB	rgb(65, 64, 188)
HSL	hsl(240, 49%, 49%)
HSV	hsv(240, 66%, 74%)
CMYK	cmyk(65.4%, 66%, 0%, 26.3%)
CIE-LAB	lab(34.84, 39.04, -65.08)
CIE-LCH	lch(34.84, 75.89, 300.96°)
OKLab	oklab(45.45% 0.0203 -0.1878)
OKLCH	oklch(45.45% 0.189 276.2)
XYZ	xyz(13.0875, 8.4203, 48.5028)
Luminance	0.0842 (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

#4140BC #BBBC40

analogous

#407DBC #4140BC #7F40BC

triadic

#4140BC #BC4140 #40BC41

tetradic

#4140BC #BC407D #BBBC40 #40BC7F

square

#4140BC #BC407D #BBBC40 #40BC7F

split-complementary

#4140BC #BC7F40 #7DBC40

monochromatic

#212161 #31308E #4140BC #6D6CCD #9A9ADD

Accessibility & contrast

On white

7.82

#4140BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4140BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4140BC

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4140BC	#FFFFFF	#000000	##FFFFFF
##4140BC	1.00	7.82	2.68	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4140bc;
/* rgb */ color: rgb(65, 64, 188);
/* oklch */ color: oklch(45.4% 0.189 276.2);

Tailwind

colors: {
  custom: {
    50: '#8475d1',
    500: '#4140bc',
    950: '#000000',
  },
}

SCSS

$custom: #4140bc;
$custom-light: #8475d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4140bc",
  "rgb": {
    "r": 65,
    "g": 64,
    "b": 188
  },
  "hsl": {
    "h": 240.484,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45448,
    "c": 0.18886,
    "h": 276.2
  },
  "luminance": 0.08421
}

Semantic roles & 50–950 ramp

primary

#4140BC

secondary

#C8C98F

accent

#D94FD8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4140BC

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

Preview Lab → · Contrast checker → · Palette generator →