#281589#281589

#281589 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.175 H 277.7°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#281589
RGB	rgb(40, 21, 137)
HSL	hsl(250, 73%, 31%)
HSV	hsv(250, 85%, 54%)
CMYK	cmyk(70.8%, 84.7%, 0%, 46.3%)
CIE-LAB	lab(19.20, 43.51, -59.97)
CIE-LCH	lch(19.20, 74.09, 305.97°)
OKLab	oklab(32.3% 0.0233 -0.1732)
OKLCH	oklch(32.3% 0.175 277.7)
XYZ	xyz(5.6571, 2.7931, 23.9031)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281589 #768915

analogous

#153C89 #281589 #621589

triadic

#281589 #892815 #158928

tetradic

#281589 #89153C #768915 #158962

square

#281589 #89153C #768915 #158962

split-complementary

#281589 #896215 #3C8915

monochromatic

#09051F #190D54 #281589 #371DBE #5438E0

Accessibility & contrast

On white

13.47

#281589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#281589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281589

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281589	#FFFFFF	#000000	##FFFFFF
##281589	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002A87

Tritanopia (blue-blind)

#003A51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281589;
/* rgb */ color: rgb(40, 21, 137);
/* oklch */ color: oklch(32.3% 0.175 277.7);

Tailwind

colors: {
  custom: {
    50: '#7257ad',
    500: '#281589',
    950: '#000000',
  },
}

SCSS

$custom: #281589;
$custom-light: #7257ad;
$custom-dark: #000000;

JSON

{
  "hex": "#281589",
  "rgb": {
    "r": 40,
    "g": 21,
    "b": 137
  },
  "hsl": {
    "h": 249.828,
    "s": 73.418,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32301,
    "c": 0.1748,
    "h": 277.7
  },
  "luminance": 0.02794
}

Semantic roles & 50–950 ramp

primary

#281589

secondary

#A8BD3D

accent

#F038D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281589

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

Preview Lab → · Contrast checker → · Palette generator →