#284F9A#284F9A

#284F9A is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.2% C 0.131 H 261.9°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#284F9A
RGB	rgb(40, 79, 154)
HSL	hsl(219, 59%, 38%)
HSV	hsv(219, 74%, 60%)
CMYK	cmyk(74%, 48.7%, 0%, 39.6%)
CIE-LAB	lab(34.75, 13.30, -45.03)
CIE-LCH	lch(34.75, 46.95, 286.45°)
OKLab	oklab(44.19% -0.0184 -0.1292)
OKLCH	oklch(44.19% 0.131 261.9)
XYZ	xyz(9.5017, 8.3751, 31.6814)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F9A #9A7328

analogous

#28889A #284F9A #3A289A

triadic

#284F9A #9A284F #4F9A28

tetradic

#284F9A #9A2888 #9A7328 #289A3A

square

#284F9A #9A2888 #9A7328 #289A3A

split-complementary

#284F9A #9A3A28 #889A28

monochromatic

#0F1D39 #1B3669 #284F9A #3568CA #658CD7

Accessibility & contrast

On white

7.85

#284F9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#284F9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F9A

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F9A	#FFFFFF	#000000	##FFFFFF
##284F9A	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26579D

Deuteranopia (green-blind)

#054D98

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284f9a;
/* rgb */ color: rgb(40, 79, 154);
/* oklch */ color: oklch(44.2% 0.131 261.9);

Tailwind

colors: {
  custom: {
    50: '#727fb8',
    500: '#284f9a',
    950: '#000000',
  },
}

SCSS

$custom: #284f9a;
$custom-light: #727fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#284f9a",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 154
  },
  "hsl": {
    "h": 219.474,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.44194,
    "c": 0.1305,
    "h": 261.9
  },
  "luminance": 0.08376
}

Semantic roles & 50–950 ramp

primary

#284F9A

secondary

#BD9D61

accent

#AD46E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #284F9A

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

Preview Lab → · Contrast checker → · Palette generator →