#282F8B#282F8B

#282F8B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.3% C 0.150 H 272.9°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#282F8B
RGB	rgb(40, 47, 139)
HSL	hsl(236, 55%, 35%)
HSV	hsv(236, 71%, 55%)
CMYK	cmyk(71.2%, 66.2%, 0%, 45.5%)
CIE-LAB	lab(24.79, 29.18, -52.00)
CIE-LCH	lch(24.79, 59.63, 299.30°)
OKLab	oklab(36.34% 0.0076 -0.1502)
OKLCH	oklch(36.34% 0.15 272.9)
XYZ	xyz(6.5502, 4.3476, 24.9151)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282F8B #8B8428

analogous

#28608B #282F8B #53288B

triadic

#282F8B #8B282F #2F8B28

tetradic

#282F8B #8B2860 #8B8428 #288B53

square

#282F8B #8B2860 #8B8428 #288B53

split-complementary

#282F8B #8B5328 #608B28

monochromatic

#0D0F2C #1A1F5B #282F8B #363FBB #5D65D0

Accessibility & contrast

On white

11.23

#282F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#282F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282F8B

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282F8B	#FFFFFF	#000000	##FFFFFF
##282F8B	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #282f8b;
/* rgb */ color: rgb(40, 47, 139);
/* oklch */ color: oklch(36.3% 0.150 272.9);

Tailwind

colors: {
  custom: {
    50: '#7067ae',
    500: '#282f8b',
    950: '#000000',
  },
}

SCSS

$custom: #282f8b;
$custom-light: #7067ae;
$custom-dark: #000000;

JSON

{
  "hex": "#282f8b",
  "rgb": {
    "r": 40,
    "g": 47,
    "b": 139
  },
  "hsl": {
    "h": 235.758,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.36344,
    "c": 0.15036,
    "h": 272.9
  },
  "luminance": 0.04348
}

Semantic roles & 50–950 ramp

primary

#282F8B

secondary

#B6AF59

accent

#D449DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #282F8B

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

Preview Lab → · Contrast checker → · Palette generator →