#281A81#281A81

#281A81 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.161 H 278.3°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#281A81
RGB	rgb(40, 26, 129)
HSL	hsl(248, 66%, 30%)
HSV	hsv(248, 80%, 51%)
CMYK	cmyk(69%, 79.8%, 0%, 49.4%)
CIE-LAB	lab(19.12, 38.52, -55.05)
CIE-LCH	lch(19.12, 67.19, 304.98°)
OKLab	oklab(31.97% 0.0233 -0.159)
OKLCH	oklch(31.97% 0.161 278.3)
XYZ	xyz(5.2056, 2.7744, 21.0258)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A81 #73811A

analogous

#1A4081 #281A81 #5B1A81

triadic

#281A81 #81281A #1A8128

tetradic

#281A81 #811A40 #73811A #1A815B

square

#281A81 #811A40 #73811A #1A815B

split-complementary

#281A81 #815B1A #40811A

monochromatic

#08051B #18104E #281A81 #3824B4 #523DD8

Accessibility & contrast

On white

13.50

#281A81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#281A81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A81

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A81	#FFFFFF	#000000	##FFFFFF
##281A81	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#002A7F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281a81;
/* rgb */ color: rgb(40, 26, 129);
/* oklch */ color: oklch(32.0% 0.161 278.3);

Tailwind

colors: {
  custom: {
    50: '#7059a7',
    500: '#281a81',
    950: '#000000',
  },
}

SCSS

$custom: #281a81;
$custom-light: #7059a7;
$custom-dark: #000000;

JSON

{
  "hex": "#281a81",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 129
  },
  "hsl": {
    "h": 248.155,
    "s": 66.452,
    "l": 30.392
  },
  "oklch": {
    "l": 0.31974,
    "c": 0.16073,
    "h": 278.3
  },
  "luminance": 0.02775
}

Semantic roles & 50–950 ramp

primary

#281A81

secondary

#A5B542

accent

#E93ED2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281A81

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

Preview Lab → · Contrast checker → · Palette generator →