#4340B2#4340B2

#4340B2 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.7% C 0.175 H 277.8°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#4340B2
RGB	rgb(67, 64, 178)
HSL	hsl(242, 47%, 47%)
HSV	hsv(242, 64%, 70%)
CMYK	cmyk(62.4%, 64%, 0%, 30.2%)
CIE-LAB	lab(34.14, 35.99, -60.33)
CIE-LCH	lch(34.14, 70.24, 300.82°)
OKLab	oklab(44.71% 0.0237 -0.1737)
OKLCH	oklch(44.71% 0.175 277.8)
XYZ	xyz(12.1814, 8.0735, 43.0273)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.89

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4340B2 #AFB240

analogous

#4076B2 #4340B2 #7C40B2

triadic

#4340B2 #B24340 #40B243

tetradic

#4340B2 #B24076 #AFB240 #40B27C

square

#4340B2 #B24076 #AFB240 #40B27C

split-complementary

#4340B2 #B27C40 #76B240

monochromatic

#212058 #323085 #4340B2 #6967C8 #9694D8

Accessibility & contrast

On white

8.03

#4340B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#4340B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4340B2

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4340B2	#FFFFFF	#000000	##FFFFFF
##4340B2	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B6

Deuteranopia (green-blind)

#004BB0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4340b2;
/* rgb */ color: rgb(67, 64, 178);
/* oklch */ color: oklch(44.7% 0.175 277.8);

Tailwind

colors: {
  custom: {
    50: '#8375ca',
    500: '#4340b2',
    950: '#000000',
  },
}

SCSS

$custom: #4340b2;
$custom-light: #8375ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4340b2",
  "rgb": {
    "r": 67,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 241.579,
    "s": 47.107,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44707,
    "c": 0.17535,
    "h": 277.8
  },
  "luminance": 0.08074
}

Semantic roles & 50–950 ramp

primary

#4340B2

secondary

#C2C48A

accent

#D751D3

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4340B2

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

Preview Lab → · Contrast checker → · Palette generator →