#4043BC#4043BC

#4043BC is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.9% C 0.186 H 275.2°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#4043BC
RGB	rgb(64, 67, 188)
HSL	hsl(239, 49%, 49%)
HSV	hsv(239, 66%, 74%)
CMYK	cmyk(66%, 64.4%, 0%, 26.3%)
CIE-LAB	lab(35.47, 37.06, -64.07)
CIE-LCH	lch(35.47, 74.01, 300.05°)
OKLab	oklab(45.89% 0.0168 -0.1848)
OKLCH	oklch(45.89% 0.186 275.2)
XYZ	xyz(13.1956, 8.7340, 48.5576)
Luminance	0.0873 (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

#4043BC #BCB940

analogous

#4081BC #4043BC #7B40BC

triadic

#4043BC #BC4043 #43BC40

tetradic

#4043BC #BC4081 #BCB940 #40BC7B

square

#4043BC #BC4081 #BCB940 #40BC7B

split-complementary

#4043BC #BC7B40 #81BC40

monochromatic

#212261 #30338E #4043BC #6C6FCD #9A9BDD

Accessibility & contrast

On white

7.64

#4043BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#4043BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4043BC

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043BC	#FFFFFF	#000000	##FFFFFF
##4043BC	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C0

Deuteranopia (green-blind)

#004EBA

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4043bc;
/* rgb */ color: rgb(64, 67, 188);
/* oklch */ color: oklch(45.9% 0.186 275.2);

Tailwind

colors: {
  custom: {
    50: '#8477d1',
    500: '#4043bc',
    950: '#000000',
  },
}

SCSS

$custom: #4043bc;
$custom-light: #8477d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4043bc",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 188
  },
  "hsl": {
    "h": 238.548,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45885,
    "c": 0.18555,
    "h": 275.2
  },
  "luminance": 0.08735
}

Semantic roles & 50–950 ramp

primary

#4043BC

secondary

#C9C78F

accent

#D54FD9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #4043BC

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

Preview Lab → · Contrast checker → · Palette generator →