#281DA0#281DA0

#281DA0 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.9% C 0.196 H 274.0°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#281DA0
RGB	rgb(40, 29, 160)
HSL	hsl(245, 69%, 37%)
HSV	hsv(245, 82%, 63%)
CMYK	cmyk(75%, 81.9%, 0%, 37.3%)
CIE-LAB	lab(23.23, 46.87, -67.51)
CIE-LCH	lch(23.23, 82.18, 304.77°)
OKLab	oklab(35.89% 0.0136 -0.1953)
OKLCH	oklch(35.89% 0.196 274)
XYZ	xyz(7.6575, 3.8671, 33.5938)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281DA0 #95A01D

analogous

#1D54A0 #281DA0 #6A1DA0

triadic

#281DA0 #A0281D #1DA028

tetradic

#281DA0 #A01D54 #95A01D #1DA06A

square

#281DA0 #A01D54 #95A01D #1DA06A

split-complementary

#281DA0 #A06A1D #54A01D

monochromatic

#0E0A38 #1B146C #281DA0 #3526D4 #6257E1

Accessibility & contrast

On white

11.84

#281DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#281DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281DA0

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281DA0	#FFFFFF	#000000	##FFFFFF
##281DA0	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA4

Deuteranopia (green-blind)

#00319E

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #281da0;
/* rgb */ color: rgb(40, 29, 160);
/* oklch */ color: oklch(35.9% 0.196 274.0);

Tailwind

colors: {
  custom: {
    50: '#775dbd',
    500: '#281da0',
    950: '#000000',
  },
}

SCSS

$custom: #281da0;
$custom-light: #775dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#281da0",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 160
  },
  "hsl": {
    "h": 245.038,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35887,
    "c": 0.19573,
    "h": 274
  },
  "luminance": 0.03868
}

Semantic roles & 50–950 ramp

primary

#281DA0

secondary

#BBC455

accent

#EC3CDD

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281DA0

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

Preview Lab → · Contrast checker → · Palette generator →