#281B7B#281B7B

#281B7B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.4% C 0.152 H 279.2°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#281B7B
RGB	rgb(40, 27, 123)
HSL	hsl(248, 64%, 29%)
HSV	hsv(248, 78%, 48%)
CMYK	cmyk(67.5%, 78%, 0%, 51.8%)
CIE-LAB	lab(18.65, 36.00, -52.01)
CIE-LCH	lch(18.65, 63.26, 304.69°)
OKLab	oklab(31.45% 0.0243 -0.1502)
OKLCH	oklch(31.45% 0.152 279.2)
XYZ	xyz(4.8410, 2.6646, 18.9943)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B7B #6E7B1B

analogous

#1B3E7B #281B7B #581B7B

triadic

#281B7B #7B281B #1B7B28

tetradic

#281B7B #7B1B3E #6E7B1B #1B7B58

square

#281B7B #7B1B3E #6E7B1B #1B7B58

split-complementary

#281B7B #7B581B #3E7B1B

monochromatic

#080619 #181049 #281B7B #3826AD #513CD4

Accessibility & contrast

On white

13.70

#281B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B7B

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B7B	#FFFFFF	#000000	##FFFFFF
##281B7B	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281b7b;
/* rgb */ color: rgb(40, 27, 123);
/* oklch */ color: oklch(31.4% 0.152 279.2);

Tailwind

colors: {
  custom: {
    50: '#6e5aa2',
    500: '#281b7b',
    950: '#000000',
  },
}

SCSS

$custom: #281b7b;
$custom-light: #6e5aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#281b7b",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 123
  },
  "hsl": {
    "h": 248.125,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31447,
    "c": 0.15212,
    "h": 279.2
  },
  "luminance": 0.02665
}

Semantic roles & 50–950 ramp

primary

#281B7B

secondary

#A0AF43

accent

#E741D1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281B7B

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

Preview Lab → · Contrast checker → · Palette generator →