#281B7E#281B7E

#281B7E is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.156 H 278.7°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#281B7E
RGB	rgb(40, 27, 126)
HSL	hsl(248, 65%, 30%)
HSV	hsv(248, 79%, 49%)
CMYK	cmyk(68.3%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(18.97, 36.99, -53.39)
CIE-LCH	lch(18.97, 64.95, 304.72°)
OKLab	oklab(31.78% 0.0235 -0.1542)
OKLCH	oklch(31.78% 0.156 278.7)
XYZ	xyz(5.0317, 2.7409, 19.9985)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B7E #717E1B

analogous

#1B3F7E #281B7E #5A1B7E

triadic

#281B7E #7E281B #1B7E28

tetradic

#281B7E #7E1B3F #717E1B #1B7E5A

square

#281B7E #7E1B3F #717E1B #1B7E5A

split-complementary

#281B7E #7E5A1B #3F7E1B

monochromatic

#080519 #18104C #281B7E #3826B0 #523ED6

Accessibility & contrast

On white

13.56

#281B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#281B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B7E

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B7E	#FFFFFF	#000000	##FFFFFF
##281B7E	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003281

Deuteranopia (green-blind)

#002A7C

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281b7e;
/* rgb */ color: rgb(40, 27, 126);
/* oklch */ color: oklch(31.8% 0.156 278.7);

Tailwind

colors: {
  custom: {
    50: '#6f5aa4',
    500: '#281b7e',
    950: '#000000',
  },
}

SCSS

$custom: #281b7e;
$custom-light: #6f5aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#281b7e",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 247.879,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.31775,
    "c": 0.15595,
    "h": 278.7
  },
  "luminance": 0.02741
}

Semantic roles & 50–950 ramp

primary

#281B7E

secondary

#A3B243

accent

#E840D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281B7E

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

Preview Lab → · Contrast checker → · Palette generator →