#284CA0#284CA0

#284CA0 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.0% C 0.143 H 264.0°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#284CA0
RGB	rgb(40, 76, 160)
HSL	hsl(222, 60%, 39%)
HSV	hsv(222, 75%, 63%)
CMYK	cmyk(75%, 52.5%, 0%, 37.3%)
CIE-LAB	lab(34.31, 17.63, -49.36)
CIE-LCH	lch(34.31, 52.41, 289.66°)
OKLab	oklab(43.99% -0.015 -0.142)
OKLCH	oklch(43.99% 0.143 264)
XYZ	xyz(9.8024, 8.1570, 34.3087)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA0 #A07C28

analogous

#2888A0 #284CA0 #4028A0

triadic

#284CA0 #A0284C #4CA028

tetradic

#284CA0 #A02888 #A07C28 #28A040

square

#284CA0 #A02888 #A07C28 #28A040

split-complementary

#284CA0 #A04028 #88A028

monochromatic

#101D3E #1C356F #284CA0 #3865CD #698BD9

Accessibility & contrast

On white

7.98

#284CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#284CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA0

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA0	#FFFFFF	#000000	##FFFFFF
##284CA0	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1556A3

Deuteranopia (green-blind)

#004B9E

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #284ca0;
/* rgb */ color: rgb(40, 76, 160);
/* oklch */ color: oklch(44.0% 0.143 264.0);

Tailwind

colors: {
  custom: {
    50: '#737dbd',
    500: '#284ca0',
    950: '#000000',
  },
}

SCSS

$custom: #284ca0;
$custom-light: #737dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca0",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 160
  },
  "hsl": {
    "h": 222,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.43988,
    "c": 0.1428,
    "h": 264
  },
  "luminance": 0.08158
}

Semantic roles & 50–950 ramp

primary

#284CA0

secondary

#C0A464

accent

#B445E3

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284CA0

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

Preview Lab → · Contrast checker → · Palette generator →