#284A9C#284A9C

#284A9C is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.2% C 0.140 H 264.4°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#284A9C
RGB	rgb(40, 74, 156)
HSL	hsl(222, 59%, 38%)
HSV	hsv(222, 74%, 61%)
CMYK	cmyk(74.4%, 52.6%, 0%, 38.8%)
CIE-LAB	lab(33.45, 17.43, -48.33)
CIE-LCH	lch(33.45, 51.38, 289.83°)
OKLab	oklab(43.25% -0.0137 -0.139)
OKLCH	oklch(43.25% 0.14 264.4)
XYZ	xyz(9.3225, 7.7480, 32.4502)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284A9C #9C7A28

analogous

#28849C #284A9C #40289C

triadic

#284A9C #9C284A #4A9C28

tetradic

#284A9C #9C2884 #9C7A28 #289C40

square

#284A9C #9C2884 #9C7A28 #289C40

split-complementary

#284A9C #9C4028 #849C28

monochromatic

#0F1C3B #1C336B #284A9C #3662CB #6788D8

Accessibility & contrast

On white

8.24

#284A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#284A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284A9C

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284A9C	#FFFFFF	#000000	##FFFFFF
##284A9C	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14549F

Deuteranopia (green-blind)

#004A9A

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284a9c;
/* rgb */ color: rgb(40, 74, 156);
/* oklch */ color: oklch(43.2% 0.140 264.4);

Tailwind

colors: {
  custom: {
    50: '#727cba',
    500: '#284a9c',
    950: '#000000',
  },
}

SCSS

$custom: #284a9c;
$custom-light: #727cba;
$custom-dark: #000000;

JSON

{
  "hex": "#284a9c",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 156
  },
  "hsl": {
    "h": 222.414,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.43246,
    "c": 0.1397,
    "h": 264.4
  },
  "luminance": 0.07749
}

Semantic roles & 50–950 ramp

primary

#284A9C

secondary

#BEA362

accent

#B445E2

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284A9C

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

Preview Lab → · Contrast checker → · Palette generator →