#4340B3#4340B3

#4340B3 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.8% C 0.177 H 277.7°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#4340B3
RGB	rgb(67, 64, 179)
HSL	hsl(242, 47%, 48%)
HSV	hsv(242, 64%, 70%)
CMYK	cmyk(62.6%, 64.2%, 0%, 29.8%)
CIE-LAB	lab(34.22, 36.32, -60.78)
CIE-LCH	lch(34.22, 70.81, 300.86°)
OKLab	oklab(44.79% 0.0236 -0.1751)
OKLCH	oklch(44.79% 0.177 277.7)
XYZ	xyz(12.2822, 8.1138, 43.5580)
Luminance	0.0811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.85

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4340B3 #B0B340

analogous

#4077B3 #4340B3 #7C40B3

triadic

#4340B3 #B34340 #40B343

tetradic

#4340B3 #B34077 #B0B340 #40B37C

square

#4340B3 #B34077 #B0B340 #40B37C

split-complementary

#4340B3 #B37C40 #77B340

monochromatic

#212059 #323086 #4340B3 #6A67C9 #9694D9

Accessibility & contrast

On white

8.01

#4340B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#4340B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4340B3

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4340B3	#FFFFFF	#000000	##FFFFFF
##4340B3	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B7

Deuteranopia (green-blind)

#004CB1

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4340b3;
/* rgb */ color: rgb(67, 64, 179);
/* oklch */ color: oklch(44.8% 0.177 277.7);

Tailwind

colors: {
  custom: {
    50: '#8475cb',
    500: '#4340b3',
    950: '#000000',
  },
}

SCSS

$custom: #4340b3;
$custom-light: #8475cb;
$custom-dark: #000000;

JSON

{
  "hex": "#4340b3",
  "rgb": {
    "r": 67,
    "g": 64,
    "b": 179
  },
  "hsl": {
    "h": 241.565,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44793,
    "c": 0.17667,
    "h": 277.7
  },
  "luminance": 0.08115
}

Semantic roles & 50–950 ramp

primary

#4340B3

secondary

#C3C48A

accent

#D751D3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4340B3

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

Preview Lab → · Contrast checker → · Palette generator →