#282F9B#282F9B

#282F9B is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.172 H 272.0°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#282F9B
RGB	rgb(40, 47, 155)
HSL	hsl(236, 59%, 38%)
HSV	hsv(236, 74%, 61%)
CMYK	cmyk(74.2%, 69.7%, 0%, 39.2%)
CIE-LAB	lab(26.30, 35.00, -59.38)
CIE-LCH	lch(26.30, 68.93, 300.51°)
OKLab	oklab(37.91% 0.0061 -0.1718)
OKLCH	oklch(37.91% 0.172 272)
XYZ	xyz(7.8060, 4.8499, 31.5287)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#282F9B #9B9428

analogous

#28689B #282F9B #5A289B

triadic

#282F9B #9B282F #2F9B28

tetradic

#282F9B #9B2868 #9B9428 #289B5A

square

#282F9B #9B2868 #9B9428 #289B5A

split-complementary

#282F9B #9B5A28 #689B28

monochromatic

#0F113A #1B206A #282F9B #353ECB #666DD7

Accessibility & contrast

On white

10.66

#282F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#282F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #282F9B

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##282F9B	#FFFFFF	#000000	##FFFFFF
##282F9B	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449E

Deuteranopia (green-blind)

#003999

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #282f9b;
/* rgb */ color: rgb(40, 47, 155);
/* oklch */ color: oklch(37.9% 0.172 272.0);

Tailwind

colors: {
  custom: {
    50: '#7468ba',
    500: '#282f9b',
    950: '#000000',
  },
}

SCSS

$custom: #282f9b;
$custom-light: #7468ba;
$custom-dark: #000000;

JSON

{
  "hex": "#282f9b",
  "rgb": {
    "r": 40,
    "g": 47,
    "b": 155
  },
  "hsl": {
    "h": 236.348,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.37908,
    "c": 0.17186,
    "h": 272
  },
  "luminance": 0.04851
}

Semantic roles & 50–950 ramp

primary

#282F9B

secondary

#BDB861

accent

#D946E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #282F9B

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

Preview Lab → · Contrast checker → · Palette generator →