#4028BB#4028BB

#4028BB is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.9% C 0.213 H 279.4°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#4028BB
RGB	rgb(64, 40, 187)
HSL	hsl(250, 65%, 45%)
HSV	hsv(250, 79%, 73%)
CMYK	cmyk(65.8%, 78.6%, 0%, 26.7%)
CIE-LAB	lab(29.90, 51.88, -72.63)
CIE-LCH	lch(29.90, 89.25, 305.54°)
OKLab	oklab(41.88% 0.0347 -0.2097)
OKLCH	oklch(41.88% 0.213 279.4)
XYZ	xyz(11.8399, 6.1945, 47.5758)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4028BB #A3BB28

analogous

#285ABB #4028BB #8A28BB

triadic

#4028BB #BB4028 #28BB40

tetradic

#4028BB #BB285A #A3BB28 #28BB8A

square

#4028BB #BB285A #A3BB28 #28BB8A

split-complementary

#4028BB #BB8A28 #5ABB28

monochromatic

#1D1256 #2F1D89 #4028BB #6048D8 #8C7BE3

Accessibility & contrast

On white

9.38

#4028BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#4028BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4028BB

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4028BB	#FFFFFF	#000000	##FFFFFF
##4028BB	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CBF

Deuteranopia (green-blind)

#0041B8

Tritanopia (blue-blind)

#005471

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #4028bb;
/* rgb */ color: rgb(64, 40, 187);
/* oklch */ color: oklch(41.9% 0.213 279.4);

Tailwind

colors: {
  custom: {
    50: '#8666d1',
    500: '#4028bb',
    950: '#000000',
  },
}

SCSS

$custom: #4028bb;
$custom-light: #8666d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4028bb",
  "rgb": {
    "r": 64,
    "g": 40,
    "b": 187
  },
  "hsl": {
    "h": 249.796,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41877,
    "c": 0.21257,
    "h": 279.4
  },
  "luminance": 0.06195
}

Semantic roles & 50–950 ramp

primary

#4028BB

secondary

#BDCB74

accent

#E840CC

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0614

muted

#7E7A83

Preview Lab

Preview with #4028BB

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

Preview Lab → · Contrast checker → · Palette generator →