#281FAD#281FAD

#281FAD is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.6% C 0.209 H 272.6°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#281FAD
RGB	rgb(40, 31, 173)
HSL	hsl(244, 70%, 40%)
HSV	hsv(244, 82%, 68%)
CMYK	cmyk(76.9%, 82.1%, 0%, 32.2%)
CIE-LAB	lab(25.10, 49.95, -72.28)
CIE-LCH	lch(25.10, 87.86, 304.65°)
OKLab	oklab(37.63% 0.0096 -0.2091)
OKLCH	oklch(37.63% 0.209 272.6)
XYZ	xyz(8.9054, 4.4473, 39.9161)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281FAD #A4AD1F

analogous

#1F5DAD #281FAD #6F1FAD

triadic

#281FAD #AD281F #1FAD28

tetradic

#281FAD #AD1F5D #A4AD1F #1FAD6F

square

#281FAD #AD1F5D #A4AD1F #1FAD6F

split-complementary

#281FAD #AD6F1F #5DAD1F

monochromatic

#100C45 #1C1679 #281FAD #3A2FDA #6B63E3

Accessibility & contrast

On white

11.11

#281FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#281FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FAD

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281FAD	#FFFFFF	#000000	##FFFFFF
##281FAD	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B1

Deuteranopia (green-blind)

#0035AB

Tritanopia (blue-blind)

#004C67

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #281fad;
/* rgb */ color: rgb(40, 31, 173);
/* oklch */ color: oklch(37.6% 0.209 272.6);

Tailwind

colors: {
  custom: {
    50: '#7a5fc7',
    500: '#281fad',
    950: '#000000',
  },
}

SCSS

$custom: #281fad;
$custom-light: #7a5fc7;
$custom-dark: #000000;

JSON

{
  "hex": "#281fad",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 173
  },
  "hsl": {
    "h": 243.803,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.37631,
    "c": 0.20934,
    "h": 272.6
  },
  "luminance": 0.04448
}

Semantic roles & 50–950 ramp

primary

#281FAD

secondary

#C1C860

accent

#EC3BE1

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #281FAD

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

Preview Lab → · Contrast checker → · Palette generator →