#4340BC#4340BC

#4340BC is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.188 H 276.9°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#4340BC
RGB	rgb(67, 64, 188)
HSL	hsl(241, 49%, 49%)
HSV	hsv(241, 66%, 74%)
CMYK	cmyk(64.4%, 66%, 0%, 26.3%)
CIE-LAB	lab(34.98, 39.32, -64.85)
CIE-LCH	lch(34.98, 75.84, 301.23°)
OKLab	oklab(45.59% 0.0228 -0.187)
OKLCH	oklch(45.59% 0.188 276.9)
XYZ	xyz(13.2223, 8.4898, 48.5091)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.98

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4340BC #B9BC40

analogous

#407BBC #4340BC #8140BC

triadic

#4340BC #BC4340 #40BC43

tetradic

#4340BC #BC407B #B9BC40 #40BC81

square

#4340BC #BC407B #B9BC40 #40BC81

split-complementary

#4340BC #BC8140 #7BBC40

monochromatic

#222161 #33308E #4340BC #6F6CCD #9B9ADD

Accessibility & contrast

On white

7.78

#4340BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#4340BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4340BC

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4340BC	#FFFFFF	#000000	##FFFFFF
##4340BC	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C0

Deuteranopia (green-blind)

#004DBA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4340bc;
/* rgb */ color: rgb(67, 64, 188);
/* oklch */ color: oklch(45.6% 0.188 276.9);

Tailwind

colors: {
  custom: {
    50: '#8575d1',
    500: '#4340bc',
    950: '#000000',
  },
}

SCSS

$custom: #4340bc;
$custom-light: #8575d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4340bc",
  "rgb": {
    "r": 67,
    "g": 64,
    "b": 188
  },
  "hsl": {
    "h": 241.452,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45586,
    "c": 0.1884,
    "h": 276.9
  },
  "luminance": 0.08491
}

Semantic roles & 50–950 ramp

primary

#4340BC

secondary

#C7C98F

accent

#D94FD5

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4340BC

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

Preview Lab → · Contrast checker → · Palette generator →