#284CA9#284CA9

#284CA9 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.7% C 0.155 H 264.8°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#284CA9
RGB	rgb(40, 76, 169)
HSL	hsl(223, 62%, 41%)
HSV	hsv(223, 76%, 66%)
CMYK	cmyk(76.3%, 55%, 0%, 33.7%)
CIE-LAB	lab(34.97, 21.11, -53.68)
CIE-LCH	lch(34.97, 57.68, 291.47°)
OKLab	oklab(44.7% -0.0141 -0.1547)
OKLCH	oklch(44.7% 0.155 264.8)
XYZ	xyz(10.6184, 8.4834, 38.6063)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA9 #A98528

analogous

#288CA9 #284CA9 #4528A9

triadic

#284CA9 #A9284C #4CA928

tetradic

#284CA9 #A9288C #A98528 #28A945

square

#284CA9 #A9288C #A98528 #28A945

split-complementary

#284CA9 #A94528 #8CA928

monochromatic

#111F46 #1C3678 #284CA9 #3D66D1 #6F8DDD

Accessibility & contrast

On white

7.79

#284CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#284CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA9

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA9	#FFFFFF	#000000	##FFFFFF
##284CA9	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AC

Deuteranopia (green-blind)

#004DA7

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284ca9;
/* rgb */ color: rgb(40, 76, 169);
/* oklch */ color: oklch(44.7% 0.155 264.8);

Tailwind

colors: {
  custom: {
    50: '#757dc3',
    500: '#284ca9',
    950: '#000000',
  },
}

SCSS

$custom: #284ca9;
$custom-light: #757dc3;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca9",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 169
  },
  "hsl": {
    "h": 223.256,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44699,
    "c": 0.15535,
    "h": 264.8
  },
  "luminance": 0.08485
}

Semantic roles & 50–950 ramp

primary

#284CA9

secondary

#C4AA69

accent

#B843E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284CA9

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

Preview Lab → · Contrast checker → · Palette generator →