#4340BB#4340BB

#4340BB is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.5% C 0.187 H 277.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#4340BB
RGB	rgb(67, 64, 187)
HSL	hsl(241, 49%, 49%)
HSV	hsv(241, 66%, 73%)
CMYK	cmyk(64.2%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(34.90, 38.99, -64.40)
CIE-LCH	lch(34.90, 75.28, 301.19°)
OKLab	oklab(45.5% 0.0229 -0.1857)
OKLCH	oklch(45.5% 0.187 277)
XYZ	xyz(13.1149, 8.4469, 47.9434)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.93

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4340BB #B8BB40

analogous

#407BBB #4340BB #8040BB

triadic

#4340BB #BB4340 #40BB43

tetradic

#4340BB #BB407B #B8BB40 #40BB80

square

#4340BB #BB407B #B8BB40 #40BB80

split-complementary

#4340BB #BB8040 #7BBB40

monochromatic

#222160 #33308D #4340BB #6E6CCD #9B99DC

Accessibility & contrast

On white

7.81

#4340BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4340BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4340BB

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4340BB	#FFFFFF	#000000	##FFFFFF
##4340BB	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BF

Deuteranopia (green-blind)

#004DB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4340bb;
/* rgb */ color: rgb(67, 64, 187);
/* oklch */ color: oklch(45.5% 0.187 277.0);

Tailwind

colors: {
  custom: {
    50: '#8575d0',
    500: '#4340bb',
    950: '#000000',
  },
}

SCSS

$custom: #4340bb;
$custom-light: #8575d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4340bb",
  "rgb": {
    "r": 67,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 241.463,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45497,
    "c": 0.1871,
    "h": 277
  },
  "luminance": 0.08448
}

Semantic roles & 50–950 ramp

primary

#4340BB

secondary

#C7C88F

accent

#D94FD5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4340BB

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

Preview Lab → · Contrast checker → · Palette generator →