#284E9A#284E9A

#284E9A is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.0% C 0.132 H 262.4°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#284E9A
RGB	rgb(40, 78, 154)
HSL	hsl(220, 59%, 38%)
HSV	hsv(220, 74%, 60%)
CMYK	cmyk(74%, 49.4%, 0%, 39.6%)
CIE-LAB	lab(34.46, 13.96, -45.49)
CIE-LCH	lch(34.46, 47.59, 287.06°)
OKLab	oklab(43.97% -0.0175 -0.1306)
OKLCH	oklch(43.97% 0.132 262.4)
XYZ	xyz(9.4301, 8.2320, 31.6575)
Luminance	0.0823 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E9A #9A7428

analogous

#28879A #284E9A #3B289A

triadic

#284E9A #9A284E #4E9A28

tetradic

#284E9A #9A2887 #9A7428 #289A3B

square

#284E9A #9A2887 #9A7428 #289A3B

split-complementary

#284E9A #9A3B28 #879A28

monochromatic

#0F1D39 #1B3569 #284E9A #3567CA #658BD7

Accessibility & contrast

On white

7.93

#284E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#284E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E9A

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E9A	#FFFFFF	#000000	##FFFFFF
##284E9A	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23579D

Deuteranopia (green-blind)

#004C98

Tritanopia (blue-blind)

#00606C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284e9a;
/* rgb */ color: rgb(40, 78, 154);
/* oklch */ color: oklch(44.0% 0.132 262.4);

Tailwind

colors: {
  custom: {
    50: '#727fb8',
    500: '#284e9a',
    950: '#000000',
  },
}

SCSS

$custom: #284e9a;
$custom-light: #727fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#284e9a",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 154
  },
  "hsl": {
    "h": 220,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43971,
    "c": 0.13176,
    "h": 262.4
  },
  "luminance": 0.08233
}

Semantic roles & 50–950 ramp

primary

#284E9A

secondary

#BD9E61

accent

#AE46E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #284E9A

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

Preview Lab → · Contrast checker → · Palette generator →