#281C71#281C71

#281C71 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.138 H 280.8°. Best body text is #FFFFFF at 14.05:1 contrast (WCAG AA passes).

Color values

HEX	#281C71
RGB	rgb(40, 28, 113)
HSL	hsl(248, 60%, 28%)
HSV	hsv(248, 75%, 44%)
CMYK	cmyk(64.6%, 75.2%, 0%, 55.7%)
CIE-LAB	lab(17.80, 32.06, -46.98)
CIE-LCH	lch(17.80, 56.88, 304.31°)
OKLab	oklab(30.53% 0.0259 -0.1355)
OKLCH	oklch(30.53% 0.138 280.8)
XYZ	xyz(4.2700, 2.4736, 15.8720)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C71 #65711C

analogous

#1C3A71 #281C71 #531C71

triadic

#281C71 #71281C #1C7128

tetradic

#281C71 #711C3A #65711C #1C7153

square

#281C71 #711C3A #65711C #1C7153

split-complementary

#281C71 #71531C #3A711C

monochromatic

#090619 #171040 #281C71 #3928A2 #4E39CE

Accessibility & contrast

On white

14.05

#281C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#281C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C71

14.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C71	#FFFFFF	#000000	##FFFFFF
##281C71	1.00	14.05	1.49	14.05
#FFFFFF	14.05	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F74

Deuteranopia (green-blind)

#00286F

Tritanopia (blue-blind)

#003344

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281c71;
/* rgb */ color: rgb(40, 28, 113);
/* oklch */ color: oklch(30.5% 0.138 280.8);

Tailwind

colors: {
  custom: {
    50: '#6c5a9b',
    500: '#281c71',
    950: '#000000',
  },
}

SCSS

$custom: #281c71;
$custom-light: #6c5a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#281c71",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 113
  },
  "hsl": {
    "h": 248.471,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.30528,
    "c": 0.13795,
    "h": 280.8
  },
  "luminance": 0.02474
}

Semantic roles & 50–950 ramp

primary

#281C71

secondary

#98A643

accent

#E344CD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281C71

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

Preview Lab → · Contrast checker → · Palette generator →