#4140BF#4140BF

#4140BF is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.7% C 0.193 H 276.0°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#4140BF
RGB	rgb(65, 64, 191)
HSL	hsl(240, 50%, 50%)
HSV	hsv(240, 66%, 75%)
CMYK	cmyk(66%, 66.5%, 0%, 25.1%)
CIE-LAB	lab(35.10, 40.04, -66.42)
CIE-LCH	lch(35.10, 77.56, 301.09°)
OKLab	oklab(45.72% 0.02 -0.1917)
OKLCH	oklch(45.72% 0.193 276)
XYZ	xyz(13.4143, 8.5510, 50.2237)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4140BF #BEBF40

analogous

#407FBF #4140BF #8040BF

triadic

#4140BF #BF4140 #40BF41

tetradic

#4140BF #BF407F #BEBF40 #40BF80

square

#4140BF #BF407F #BEBF40 #40BF80

split-complementary

#4140BF #BF8040 #7FBF40

monochromatic

#222163 #313191 #4140BF #6F6ECE #9C9CDE

Accessibility & contrast

On white

7.75

#4140BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#4140BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4140BF

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4140BF	#FFFFFF	#000000	##FFFFFF
##4140BF	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004DBD

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4140bf;
/* rgb */ color: rgb(65, 64, 191);
/* oklch */ color: oklch(45.7% 0.193 276.0);

Tailwind

colors: {
  custom: {
    50: '#8575d3',
    500: '#4140bf',
    950: '#000000',
  },
}

SCSS

$custom: #4140bf;
$custom-light: #8575d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4140bf",
  "rgb": {
    "r": 65,
    "g": 64,
    "b": 191
  },
  "hsl": {
    "h": 240.472,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.45719,
    "c": 0.19271,
    "h": 276
  },
  "luminance": 0.08552
}

Semantic roles & 50–950 ramp

primary

#4140BF

secondary

#C9CA91

accent

#D94ED8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4140BF

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

Preview Lab → · Contrast checker → · Palette generator →