#4043BB#4043BB

#4043BB is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.8% C 0.184 H 275.3°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#4043BB
RGB	rgb(64, 67, 187)
HSL	hsl(239, 49%, 49%)
HSV	hsv(239, 66%, 73%)
CMYK	cmyk(65.8%, 64.2%, 0%, 26.7%)
CIE-LAB	lab(35.38, 36.72, -63.62)
CIE-LCH	lch(35.38, 73.45, 299.99°)
OKLab	oklab(45.8% 0.0169 -0.1835)
OKLCH	oklch(45.8% 0.184 275.3)
XYZ	xyz(13.0882, 8.6910, 47.9919)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4043BB #BBB840

analogous

#4080BB #4043BB #7B40BB

triadic

#4043BB #BB4043 #43BB40

tetradic

#4043BB #BB4080 #BBB840 #40BB7B

square

#4043BB #BB4080 #BBB840 #40BB7B

split-complementary

#4043BB #BB7B40 #80BB40

monochromatic

#212260 #30338D #4043BB #6C6ECD #999BDC

Accessibility & contrast

On white

7.67

#4043BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#4043BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4043BB

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043BB	#FFFFFF	#000000	##FFFFFF
##4043BB	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#004EB9

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4043bb;
/* rgb */ color: rgb(64, 67, 187);
/* oklch */ color: oklch(45.8% 0.184 275.3);

Tailwind

colors: {
  custom: {
    50: '#8477d0',
    500: '#4043bb',
    950: '#000000',
  },
}

SCSS

$custom: #4043bb;
$custom-light: #8477d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4043bb",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 187
  },
  "hsl": {
    "h": 238.537,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45797,
    "c": 0.18424,
    "h": 275.3
  },
  "luminance": 0.08692
}

Semantic roles & 50–950 ramp

primary

#4043BB

secondary

#C8C78F

accent

#D54FD9

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #4043BB

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

Preview Lab → · Contrast checker → · Palette generator →