#284E99#284E99

#284E99 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 43.9% C 0.130 H 262.2°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#284E99
RGB	rgb(40, 78, 153)
HSL	hsl(220, 59%, 38%)
HSV	hsv(220, 74%, 60%)
CMYK	cmyk(73.9%, 49%, 0%, 40%)
CIE-LAB	lab(34.39, 13.58, -45.00)
CIE-LCH	lch(34.39, 47.00, 286.79°)
OKLab	oklab(43.9% -0.0176 -0.1291)
OKLCH	oklch(43.9% 0.13 262.2)
XYZ	xyz(9.3472, 8.1988, 31.2207)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E99 #997328

analogous

#288699 #284E99 #3A2899

triadic

#284E99 #99284E #4E9928

tetradic

#284E99 #992886 #997328 #28993A

square

#284E99 #992886 #997328 #28993A

split-complementary

#284E99 #993A28 #869928

monochromatic

#0F1D38 #1B3568 #284E99 #3567CA #658BD7

Accessibility & contrast

On white

7.95

#284E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#284E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E99

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E99	#FFFFFF	#000000	##FFFFFF
##284E99	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25569C

Deuteranopia (green-blind)

#024C97

Tritanopia (blue-blind)

#00606C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284e99;
/* rgb */ color: rgb(40, 78, 153);
/* oklch */ color: oklch(43.9% 0.130 262.2);

Tailwind

colors: {
  custom: {
    50: '#717fb7',
    500: '#284e99',
    950: '#000000',
  },
}

SCSS

$custom: #284e99;
$custom-light: #717fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#284e99",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 153
  },
  "hsl": {
    "h": 219.823,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43897,
    "c": 0.13034,
    "h": 262.2
  },
  "luminance": 0.082
}

Semantic roles & 50–950 ramp

primary

#284E99

secondary

#BD9E60

accent

#AD46E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #284E99

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

Preview Lab → · Contrast checker → · Palette generator →