#281A7D#281A7D

#281A7D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.5% C 0.156 H 279.0°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#281A7D
RGB	rgb(40, 26, 125)
HSL	hsl(248, 66%, 30%)
HSV	hsv(248, 79%, 49%)
CMYK	cmyk(68%, 79.2%, 0%, 51%)
CIE-LAB	lab(18.67, 37.21, -53.25)
CIE-LCH	lch(18.67, 64.96, 304.95°)
OKLab	oklab(31.53% 0.0244 -0.1538)
OKLCH	oklch(31.53% 0.156 279)
XYZ	xyz(4.9450, 2.6702, 19.6529)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A7D #6F7D1A

analogous

#1A3E7D #281A7D #5A1A7D

triadic

#281A7D #7D281A #1A7D28

tetradic

#281A7D #7D1A3E #6F7D1A #1A7D5A

square

#281A7D #7D1A3E #6F7D1A #1A7D5A

split-complementary

#281A7D #7D5A1A #3E7D1A

monochromatic

#080519 #180F4A #281A7D #3825B0 #513BD6

Accessibility & contrast

On white

13.69

#281A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A7D

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A7D	#FFFFFF	#000000	##FFFFFF
##281A7D	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003180

Deuteranopia (green-blind)

#00297B

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281a7d;
/* rgb */ color: rgb(40, 26, 125);
/* oklch */ color: oklch(31.5% 0.156 279.0);

Tailwind

colors: {
  custom: {
    50: '#6f59a4',
    500: '#281a7d',
    950: '#000000',
  },
}

SCSS

$custom: #281a7d;
$custom-light: #6f59a4;
$custom-dark: #000000;

JSON

{
  "hex": "#281a7d",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 125
  },
  "hsl": {
    "h": 248.485,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31529,
    "c": 0.15569,
    "h": 279
  },
  "luminance": 0.02671
}

Semantic roles & 50–950 ramp

primary

#281A7D

secondary

#A1B142

accent

#E93FD1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281A7D

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

Preview Lab → · Contrast checker → · Palette generator →