#281688#281688

#281688 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.173 H 277.7°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#281688
RGB	rgb(40, 22, 136)
HSL	hsl(249, 72%, 31%)
HSV	hsv(249, 84%, 53%)
CMYK	cmyk(70.6%, 83.8%, 0%, 46.7%)
CIE-LAB	lab(19.23, 42.75, -59.28)
CIE-LCH	lch(19.23, 73.08, 305.80°)
OKLab	oklab(32.29% 0.0232 -0.1713)
OKLCH	oklch(32.29% 0.173 277.7)
XYZ	xyz(5.6045, 2.8020, 23.5333)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281688 #768816

analogous

#163D88 #281688 #611688

triadic

#281688 #882816 #168828

tetradic

#281688 #88163D #768816 #168861

square

#281688 #88163D #768816 #168861

split-complementary

#281688 #886116 #3D8816

monochromatic

#09051F #190D53 #281688 #371FBD #5439DF

Accessibility & contrast

On white

13.46

#281688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#281688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281688

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281688	#FFFFFF	#000000	##FFFFFF
##281688	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002A86

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281688;
/* rgb */ color: rgb(40, 22, 136);
/* oklch */ color: oklch(32.3% 0.173 277.7);

Tailwind

colors: {
  custom: {
    50: '#7258ac',
    500: '#281688',
    950: '#000000',
  },
}

SCSS

$custom: #281688;
$custom-light: #7258ac;
$custom-dark: #000000;

JSON

{
  "hex": "#281688",
  "rgb": {
    "r": 40,
    "g": 22,
    "b": 136
  },
  "hsl": {
    "h": 249.474,
    "s": 72.152,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32292,
    "c": 0.17282,
    "h": 277.7
  },
  "luminance": 0.02803
}

Semantic roles & 50–950 ramp

primary

#281688

secondary

#A8BC3E

accent

#EF39D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281688

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

Preview Lab → · Contrast checker → · Palette generator →