#281C7D#281C7D

#281C7D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.8% C 0.154 H 278.7°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#281C7D
RGB	rgb(40, 28, 125)
HSL	hsl(247, 63%, 30%)
HSV	hsv(247, 78%, 49%)
CMYK	cmyk(68%, 77.6%, 0%, 51%)
CIE-LAB	lab(19.06, 36.09, -52.60)
CIE-LCH	lch(19.06, 63.79, 304.46°)
OKLab	oklab(31.81% 0.0231 -0.1519)
OKLCH	oklch(31.81% 0.154 278.7)
XYZ	xyz(4.9908, 2.7619, 19.6681)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C7D #717D1C

analogous

#1C407D #281C7D #591C7D

triadic

#281C7D #7D281C #1C7D28

tetradic

#281C7D #7D1C40 #717D1C #1C7D59

square

#281C7D #7D1C40 #717D1C #1C7D59

split-complementary

#281C7D #7D591C #407D1C

monochromatic

#080619 #18114B #281C7D #3827AF #523FD4

Accessibility & contrast

On white

13.53

#281C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#281C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C7D

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C7D	#FFFFFF	#000000	##FFFFFF
##281C7D	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003280

Deuteranopia (green-blind)

#002A7B

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281c7d;
/* rgb */ color: rgb(40, 28, 125);
/* oklch */ color: oklch(31.8% 0.154 278.7);

Tailwind

colors: {
  custom: {
    50: '#6f5aa4',
    500: '#281c7d',
    950: '#000000',
  },
}

SCSS

$custom: #281c7d;
$custom-light: #6f5aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#281c7d",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 125
  },
  "hsl": {
    "h": 247.423,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.31805,
    "c": 0.15365,
    "h": 278.7
  },
  "luminance": 0.02762
}

Semantic roles & 50–950 ramp

primary

#281C7D

secondary

#A3B144

accent

#E641D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281C7D

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

Preview Lab → · Contrast checker → · Palette generator →