#281D80#281D80

#281D80 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.3% C 0.156 H 278.0°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#281D80
RGB	rgb(40, 29, 128)
HSL	hsl(247, 63%, 31%)
HSV	hsv(247, 77%, 50%)
CMYK	cmyk(68.8%, 77.3%, 0%, 49.8%)
CIE-LAB	lab(19.59, 36.53, -53.64)
CIE-LCH	lch(19.59, 64.90, 304.25°)
OKLab	oklab(32.27% 0.0218 -0.1549)
OKLCH	oklch(32.27% 0.156 278)
XYZ	xyz(5.2095, 2.8879, 20.7008)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D80 #75801D

analogous

#1D4380 #281D80 #591D80

triadic

#281D80 #80281D #1D8028

tetradic

#281D80 #801D43 #75801D #1D8059

square

#281D80 #801D43 #75801D #1D8059

split-complementary

#281D80 #80591D #43801D

monochromatic

#09061C #18124E #281D80 #3828B2 #5343D4

Accessibility & contrast

On white

13.31

#281D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#281D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D80

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D80	#FFFFFF	#000000	##FFFFFF
##281D80	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003383

Deuteranopia (green-blind)

#002B7E

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281d80;
/* rgb */ color: rgb(40, 29, 128);
/* oklch */ color: oklch(32.3% 0.156 278.0);

Tailwind

colors: {
  custom: {
    50: '#6f5ba6',
    500: '#281d80',
    950: '#000000',
  },
}

SCSS

$custom: #281d80;
$custom-light: #6f5ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#281d80",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 128
  },
  "hsl": {
    "h": 246.667,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32273,
    "c": 0.15646,
    "h": 278
  },
  "luminance": 0.02888
}

Semantic roles & 50–950 ramp

primary

#281D80

secondary

#A7B345

accent

#E642D4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281D80

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

Preview Lab → · Contrast checker → · Palette generator →