#281A7B#281A7B

#281A7B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.153 H 279.4°. Best body text is #FFFFFF at 13.78:1 contrast (WCAG AA passes).

Color values

HEX	#281A7B
RGB	rgb(40, 26, 123)
HSL	hsl(249, 65%, 29%)
HSV	hsv(249, 79%, 48%)
CMYK	cmyk(67.5%, 78.9%, 0%, 51.8%)
CIE-LAB	lab(18.45, 36.56, -52.34)
CIE-LCH	lch(18.45, 63.84, 304.93°)
OKLab	oklab(31.31% 0.0249 -0.1511)
OKLCH	oklch(31.31% 0.153 279.4)
XYZ	xyz(4.8185, 2.6196, 18.9868)
Luminance	0.0262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A7B #6D7B1A

analogous

#1A3D7B #281A7B #591A7B

triadic

#281A7B #7B281A #1A7B28

tetradic

#281A7B #7B1A3D #6D7B1A #1A7B59

square

#281A7B #7B1A3D #6D7B1A #1A7B59

split-complementary

#281A7B #7B591A #3D7B1A

monochromatic

#080519 #180F48 #281A7B #3825AE #503AD5

Accessibility & contrast

On white

13.78

#281A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#281A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A7B

13.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A7B	#FFFFFF	#000000	##FFFFFF
##281A7B	1.00	13.78	1.52	13.78
#FFFFFF	13.78	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002979

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281a7b;
/* rgb */ color: rgb(40, 26, 123);
/* oklch */ color: oklch(31.3% 0.153 279.4);

Tailwind

colors: {
  custom: {
    50: '#6f59a2',
    500: '#281a7b',
    950: '#000000',
  },
}

SCSS

$custom: #281a7b;
$custom-light: #6f59a2;
$custom-dark: #000000;

JSON

{
  "hex": "#281a7b",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 123
  },
  "hsl": {
    "h": 248.66,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31308,
    "c": 0.15315,
    "h": 279.4
  },
  "luminance": 0.0262
}

Semantic roles & 50–950 ramp

primary

#281A7B

secondary

#9FAF42

accent

#E840D0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281A7B

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

Preview Lab → · Contrast checker → · Palette generator →