#281790#281790

#281790 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.182 H 276.4°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#281790
RGB	rgb(40, 23, 144)
HSL	hsl(248, 72%, 33%)
HSV	hsv(248, 84%, 56%)
CMYK	cmyk(72.2%, 84%, 0%, 43.5%)
CIE-LAB	lab(20.35, 44.75, -62.43)
CIE-LCH	lch(20.35, 76.81, 305.63°)
OKLab	oklab(33.34% 0.0203 -0.1804)
OKLCH	oklch(33.34% 0.182 276.4)
XYZ	xyz(6.2139, 3.0769, 26.6466)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281790 #7F9017

analogous

#174290 #281790 #651790

triadic

#281790 #902817 #179028

tetradic

#281790 #901742 #7F9017 #179065

square

#281790 #901742 #7F9017 #179065

split-complementary

#281790 #906517 #429017

monochromatic

#0B0626 #190F5B #281790 #371FC5 #5741E1

Accessibility & contrast

On white

13.00

#281790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#281790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281790

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281790	#FFFFFF	#000000	##FFFFFF
##281790	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003693

Deuteranopia (green-blind)

#002C8E

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281790;
/* rgb */ color: rgb(40, 23, 144);
/* oklch */ color: oklch(33.3% 0.182 276.4);

Tailwind

colors: {
  custom: {
    50: '#7459b2',
    500: '#281790',
    950: '#000000',
  },
}

SCSS

$custom: #281790;
$custom-light: #7459b2;
$custom-dark: #000000;

JSON

{
  "hex": "#281790",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 144
  },
  "hsl": {
    "h": 248.43,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33342,
    "c": 0.18156,
    "h": 276.4
  },
  "luminance": 0.03078
}

Semantic roles & 50–950 ramp

primary

#281790

secondary

#AFC142

accent

#EF39D6

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #281790

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

Preview Lab → · Contrast checker → · Palette generator →