#284AA2#284AA2

#284AA2 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.7% C 0.148 H 264.9°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#284AA2
RGB	rgb(40, 74, 162)
HSL	hsl(223, 60%, 40%)
HSV	hsv(223, 75%, 64%)
CMYK	cmyk(75.3%, 54.3%, 0%, 36.5%)
CIE-LAB	lab(33.89, 19.75, -51.23)
CIE-LCH	lch(33.89, 54.91, 291.08°)
OKLab	oklab(43.72% -0.0131 -0.1476)
OKLCH	oklch(43.72% 0.148 264.9)
XYZ	xyz(9.8431, 7.9562, 35.1924)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284AA2 #A28028

analogous

#2887A2 #284AA2 #4328A2

triadic

#284AA2 #A2284A #4AA228

tetradic

#284AA2 #A22887 #A28028 #28A243

square

#284AA2 #A22887 #A28028 #28A243

split-complementary

#284AA2 #A24328 #87A228

monochromatic

#101D40 #1C3471 #284AA2 #3963CE #6A89DA

Accessibility & contrast

On white

8.10

#284AA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#284AA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284AA2

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284AA2	#FFFFFF	#000000	##FFFFFF
##284AA2	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0456A5

Deuteranopia (green-blind)

#004AA0

Tritanopia (blue-blind)

#005F6E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284aa2;
/* rgb */ color: rgb(40, 74, 162);
/* oklch */ color: oklch(43.7% 0.148 264.9);

Tailwind

colors: {
  custom: {
    50: '#747cbe',
    500: '#284aa2',
    950: '#000000',
  },
}

SCSS

$custom: #284aa2;
$custom-light: #747cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#284aa2",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 162
  },
  "hsl": {
    "h": 223.279,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.43718,
    "c": 0.14814,
    "h": 264.9
  },
  "luminance": 0.07957
}

Semantic roles & 50–950 ramp

primary

#284AA2

secondary

#C1A765

accent

#B744E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284AA2

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

Preview Lab → · Contrast checker → · Palette generator →