#281FBA#281FBA

#281FBA is a dark, highly saturated blue. Relative luminance 0.050; OKLCH L 39.2% C 0.224 H 271.6°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#281FBA
RGB	rgb(40, 31, 186)
HSL	hsl(243, 71%, 43%)
HSV	hsv(243, 83%, 73%)
CMYK	cmyk(78.5%, 83.3%, 0%, 27.1%)
CIE-LAB	lab(26.66, 53.90, -77.45)
CIE-LCH	lch(26.66, 94.36, 304.84°)
OKLab	oklab(39.16% 0.0064 -0.2241)
OKLCH	oklch(39.16% 0.224 271.6)
XYZ	xyz(10.2250, 4.9751, 46.8663)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281FBA #B1BA1F

analogous

#1F63BA #281FBA #761FBA

triadic

#281FBA #BA281F #1FBA28

tetradic

#281FBA #BA1F63 #B1BA1F #1FBA76

square

#281FBA #BA1F63 #B1BA1F #1FBA76

split-complementary

#281FBA #BA761F #63BA1F

monochromatic

#110E51 #1D1686 #281FBA #4238DE #746DE7

Accessibility & contrast

On white

10.53

#281FBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#281FBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FBA

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281FBA	#FFFFFF	#000000	##FFFFFF
##281FBA	1.00	10.53	2.00	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046BE

Deuteranopia (green-blind)

#0037B7

Tritanopia (blue-blind)

#00526F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #281fba;
/* rgb */ color: rgb(40, 31, 186);
/* oklch */ color: oklch(39.2% 0.224 271.6);

Tailwind

colors: {
  custom: {
    50: '#7d60d0',
    500: '#281fba',
    950: '#000000',
  },
}

SCSS

$custom: #281fba;
$custom-light: #7d60d0;
$custom-dark: #000000;

JSON

{
  "hex": "#281fba",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 186
  },
  "hsl": {
    "h": 243.484,
    "s": 71.429,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39163,
    "c": 0.22418,
    "h": 271.6
  },
  "luminance": 0.04976
}

Semantic roles & 50–950 ramp

primary

#281FBA

secondary

#C7CD68

accent

#EE3AE4

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0C0514

muted

#7D7983

Preview Lab

Preview with #281FBA

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

Preview Lab → · Contrast checker → · Palette generator →