#281D8F#281D8F

#281D8F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.9% C 0.175 H 275.9°. Best body text is #FFFFFF at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#281D8F
RGB	rgb(40, 29, 143)
HSL	hsl(246, 66%, 34%)
HSV	hsv(246, 80%, 56%)
CMYK	cmyk(72%, 79.7%, 0%, 43.9%)
CIE-LAB	lab(21.25, 41.46, -60.31)
CIE-LCH	lch(21.25, 73.18, 304.51°)
OKLab	oklab(33.94% 0.018 -0.1743)
OKLCH	oklch(33.94% 0.175 275.9)
XYZ	xyz(6.2707, 3.3124, 26.2902)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D8F #848F1D

analogous

#1D4B8F #281D8F #611D8F

triadic

#281D8F #8F281D #1D8F28

tetradic

#281D8F #8F1D4B #848F1D #1D8F61

square

#281D8F #8F1D4B #848F1D #1D8F61

split-complementary

#281D8F #8F611D #4B8F1D

monochromatic

#0C0829 #1A135C #281D8F #3627C2 #5A4CDB

Accessibility & contrast

On white

12.63

#281D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#281D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D8F

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D8F	#FFFFFF	#000000	##FFFFFF
##281D8F	1.00	12.63	1.66	12.63
#FFFFFF	12.63	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003892

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281d8f;
/* rgb */ color: rgb(40, 29, 143);
/* oklch */ color: oklch(33.9% 0.175 275.9);

Tailwind

colors: {
  custom: {
    50: '#735cb1',
    500: '#281d8f',
    950: '#000000',
  },
}

SCSS

$custom: #281d8f;
$custom-light: #735cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#281d8f",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 143
  },
  "hsl": {
    "h": 245.789,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33936,
    "c": 0.17528,
    "h": 275.9
  },
  "luminance": 0.03313
}

Semantic roles & 50–950 ramp

primary

#281D8F

secondary

#B2BD4B

accent

#E93FD9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281D8F

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

Preview Lab → · Contrast checker → · Palette generator →