#281D7B#281D7B

#281D7B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.150 H 278.8°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#281D7B
RGB	rgb(40, 29, 123)
HSL	hsl(247, 62%, 30%)
HSV	hsv(247, 76%, 48%)
CMYK	cmyk(67.5%, 76.4%, 0%, 51.8%)
CIE-LAB	lab(19.05, 34.85, -51.34)
CIE-LCH	lch(19.05, 62.05, 304.17°)
OKLab	oklab(31.73% 0.023 -0.1482)
OKLCH	oklch(31.73% 0.15 278.8)
XYZ	xyz(4.8884, 2.7595, 19.0101)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D7B #707B1D

analogous

#1D417B #281D7B #571D7B

triadic

#281D7B #7B281D #1D7B28

tetradic

#281D7B #7B1D41 #707B1D #1D7B57

square

#281D7B #7B1D41 #707B1D #1D7B57

split-complementary

#281D7B #7B571D #417B1D

monochromatic

#080619 #181149 #281D7B #3829AD #5140D2

Accessibility & contrast

On white

13.53

#281D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#281D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D7B

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D7B	#FFFFFF	#000000	##FFFFFF
##281D7B	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)

#00327E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281d7b;
/* rgb */ color: rgb(40, 29, 123);
/* oklch */ color: oklch(31.7% 0.150 278.8);

Tailwind

colors: {
  custom: {
    50: '#6e5ba2',
    500: '#281d7b',
    950: '#000000',
  },
}

SCSS

$custom: #281d7b;
$custom-light: #6e5ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#281d7b",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 123
  },
  "hsl": {
    "h": 247.021,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31734,
    "c": 0.15001,
    "h": 278.8
  },
  "luminance": 0.0276
}

Semantic roles & 50–950 ramp

primary

#281D7B

secondary

#A2AF45

accent

#E543D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281D7B

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

Preview Lab → · Contrast checker → · Palette generator →