#284399#284399

#284399 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.5% C 0.144 H 266.8°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#284399
RGB	rgb(40, 67, 153)
HSL	hsl(226, 59%, 38%)
HSV	hsv(226, 74%, 60%)
CMYK	cmyk(73.9%, 56.2%, 0%, 40%)
CIE-LAB	lab(31.26, 21.00, -50.06)
CIE-LCH	lch(31.26, 54.28, 292.76°)
OKLab	oklab(41.52% -0.0082 -0.1442)
OKLCH	oklch(41.52% 0.144 266.8)
XYZ	xyz(8.6300, 6.7644, 30.9817)
Luminance	0.0677 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284399 #997E28

analogous

#287B99 #284399 #462899

triadic

#284399 #992843 #439928

tetradic

#284399 #99287B #997E28 #289946

square

#284399 #99287B #997E28 #289946

split-complementary

#284399 #994628 #7B9928

monochromatic

#0F1938 #1B2E68 #284399 #3558CA #6580D7

Accessibility & contrast

On white

8.92

#284399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#284399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284399

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284399	#FFFFFF	#000000	##FFFFFF
##284399	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #284399;
/* rgb */ color: rgb(40, 67, 153);
/* oklch */ color: oklch(41.5% 0.144 266.8);

Tailwind

colors: {
  custom: {
    50: '#7276b8',
    500: '#284399',
    950: '#000000',
  },
}

SCSS

$custom: #284399;
$custom-light: #7276b8;
$custom-dark: #000000;

JSON

{
  "hex": "#284399",
  "rgb": {
    "r": 40,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 225.664,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4152,
    "c": 0.14444,
    "h": 266.8
  },
  "luminance": 0.06765
}

Semantic roles & 50–950 ramp

primary

#284399

secondary

#BDA660

accent

#BD46E2

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #284399

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

Preview Lab → · Contrast checker → · Palette generator →