#281C7B#281C7B

#281C7B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.151 H 279.0°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#281C7B
RGB	rgb(40, 28, 123)
HSL	hsl(248, 63%, 30%)
HSV	hsv(248, 77%, 48%)
CMYK	cmyk(67.5%, 77.2%, 0%, 51.8%)
CIE-LAB	lab(18.85, 35.43, -51.68)
CIE-LCH	lch(18.85, 62.66, 304.43°)
OKLab	oklab(31.59% 0.0236 -0.1492)
OKLCH	oklch(31.59% 0.151 279)
XYZ	xyz(4.8643, 2.7113, 19.0020)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C7B #6F7B1C

analogous

#1C407B #281C7B #581C7B

triadic

#281C7B #7B281C #1C7B28

tetradic

#281C7B #7B1C40 #6F7B1C #1C7B58

square

#281C7B #7B1C40 #6F7B1C #1C7B58

split-complementary

#281C7B #7B581C #407B1C

monochromatic

#080619 #181149 #281C7B #3827AD #513ED3

Accessibility & contrast

On white

13.62

#281C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#281C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C7B

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C7B	#FFFFFF	#000000	##FFFFFF
##281C7B	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281c7b;
/* rgb */ color: rgb(40, 28, 123);
/* oklch */ color: oklch(31.6% 0.151 279.0);

Tailwind

colors: {
  custom: {
    50: '#6e5aa2',
    500: '#281c7b',
    950: '#000000',
  },
}

SCSS

$custom: #281c7b;
$custom-light: #6e5aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#281c7b",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 123
  },
  "hsl": {
    "h": 247.579,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31588,
    "c": 0.15108,
    "h": 279
  },
  "luminance": 0.02712
}

Semantic roles & 50–950 ramp

primary

#281C7B

secondary

#A1AF44

accent

#E642D1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281C7B

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

Preview Lab → · Contrast checker → · Palette generator →