#284A99#284A99

#284A99 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.0% C 0.135 H 264.0°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#284A99
RGB	rgb(40, 74, 153)
HSL	hsl(222, 59%, 38%)
HSV	hsv(222, 74%, 60%)
CMYK	cmyk(73.9%, 51.6%, 0%, 40%)
CIE-LAB	lab(33.24, 16.27, -46.86)
CIE-LCH	lch(33.24, 49.60, 289.14°)
OKLab	oklab(43.02% -0.0141 -0.1347)
OKLCH	oklch(43.02% 0.135 264)
XYZ	xyz(9.0716, 7.6476, 31.1289)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284A99 #997728

analogous

#288299 #284A99 #3F2899

triadic

#284A99 #99284A #4A9928

tetradic

#284A99 #992882 #997728 #28993F

square

#284A99 #992882 #997728 #28993F

split-complementary

#284A99 #993F28 #829928

monochromatic

#0F1B38 #1B3368 #284A99 #3561CA #6587D7

Accessibility & contrast

On white

8.30

#284A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#284A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284A99

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284A99	#FFFFFF	#000000	##FFFFFF
##284A99	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A549C

Deuteranopia (green-blind)

#004997

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284a99;
/* rgb */ color: rgb(40, 74, 153);
/* oklch */ color: oklch(43.0% 0.135 264.0);

Tailwind

colors: {
  custom: {
    50: '#727cb8',
    500: '#284a99',
    950: '#000000',
  },
}

SCSS

$custom: #284a99;
$custom-light: #727cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#284a99",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 153
  },
  "hsl": {
    "h": 221.947,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43015,
    "c": 0.13542,
    "h": 264
  },
  "luminance": 0.07649
}

Semantic roles & 50–950 ramp

primary

#284A99

secondary

#BDA160

accent

#B346E2

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #284A99

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

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