#3828B1#3828B1

#3828B1 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.203 H 277.4°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#3828B1
RGB	rgb(56, 40, 177)
HSL	hsl(247, 63%, 43%)
HSV	hsv(247, 77%, 69%)
CMYK	cmyk(68.4%, 77.4%, 0%, 30.6%)
CIE-LAB	lab(28.20, 48.04, -69.51)
CIE-LCH	lch(28.20, 84.50, 304.65°)
OKLab	oklab(40.21% 0.0261 -0.2008)
OKLCH	oklch(40.21% 0.203 277.4)
XYZ	xyz(10.3229, 5.5317, 42.1102)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3828B1 #A1B128

analogous

#285DB1 #3828B1 #7C28B1

triadic

#3828B1 #B13828 #28B138

tetradic

#3828B1 #B1285D #A1B128 #28B17C

square

#3828B1 #B1285D #A1B128 #28B17C

split-complementary

#3828B1 #B17C28 #5DB128

monochromatic

#18114D #281D7F #3828B1 #5342D4 #8074E0

Accessibility & contrast

On white

9.97

#3828B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#3828B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3828B1

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3828B1	#FFFFFF	#000000	##FFFFFF
##3828B1	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B5

Deuteranopia (green-blind)

#003DAF

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3828b1;
/* rgb */ color: rgb(56, 40, 177);
/* oklch */ color: oklch(40.2% 0.203 277.4);

Tailwind

colors: {
  custom: {
    50: '#8065ca',
    500: '#3828b1',
    950: '#000000',
  },
}

SCSS

$custom: #3828b1;
$custom-light: #8065ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3828b1",
  "rgb": {
    "r": 56,
    "g": 40,
    "b": 177
  },
  "hsl": {
    "h": 247.007,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40214,
    "c": 0.20254,
    "h": 277.4
  },
  "luminance": 0.05533
}

Semantic roles & 50–950 ramp

primary

#3828B1

secondary

#BCC76E

accent

#E642D3

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3828B1

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

Preview Lab → · Contrast checker → · Palette generator →