#281699#281699

#281699 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.3% C 0.193 H 275.3°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#281699
RGB	rgb(40, 22, 153)
HSL	hsl(248, 75%, 34%)
HSV	hsv(248, 86%, 60%)
CMYK	cmyk(73.9%, 85.6%, 0%, 40%)
CIE-LAB	lab(21.30, 47.91, -66.42)
CIE-LCH	lch(21.30, 81.90, 305.80°)
OKLab	oklab(34.31% 0.0179 -0.192)
OKLCH	oklch(34.31% 0.193 275.3)
XYZ	xyz(6.9099, 3.3242, 30.4083)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281699 #879916

analogous

#164699 #281699 #6A1699

triadic

#281699 #992816 #169928

tetradic

#281699 #991646 #879916 #16996A

square

#281699 #991646 #879916 #16996A

split-complementary

#281699 #996A16 #469916

monochromatic

#0C072E #1A0E63 #281699 #361ECF #5B45E4

Accessibility & contrast

On white

12.61

#281699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#281699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281699

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281699	#FFFFFF	#000000	##FFFFFF
##281699	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399C

Deuteranopia (green-blind)

#002D97

Tritanopia (blue-blind)

#00415A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281699;
/* rgb */ color: rgb(40, 22, 153);
/* oklch */ color: oklch(34.3% 0.193 275.3);

Tailwind

colors: {
  custom: {
    50: '#7659b8',
    500: '#281699',
    950: '#000000',
  },
}

SCSS

$custom: #281699;
$custom-light: #7659b8;
$custom-dark: #000000;

JSON

{
  "hex": "#281699",
  "rgb": {
    "r": 40,
    "g": 22,
    "b": 153
  },
  "hsl": {
    "h": 248.244,
    "s": 74.857,
    "l": 34.314
  },
  "oklch": {
    "l": 0.34311,
    "c": 0.19281,
    "h": 275.3
  },
  "luminance": 0.03325
}

Semantic roles & 50–950 ramp

primary

#281699

secondary

#B4C546

accent

#F136D8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281699

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

Preview Lab → · Contrast checker → · Palette generator →