#284EB4#284EB4

#284EB4 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.0% C 0.168 H 264.9°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#284EB4
RGB	rgb(40, 78, 180)
HSL	hsl(224, 64%, 43%)
HSV	hsv(224, 78%, 71%)
CMYK	cmyk(77.8%, 56.7%, 0%, 29.4%)
CIE-LAB	lab(36.35, 24.01, -57.96)
CIE-LCH	lch(36.35, 62.73, 292.50°)
OKLab	oklab(46.01% -0.0148 -0.1673)
OKLCH	oklch(46.01% 0.168 264.9)
XYZ	xyz(11.8348, 9.1938, 44.3220)
Luminance	0.0920 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EB4 #B48E28

analogous

#2894B4 #284EB4 #4828B4

triadic

#284EB4 #B4284E #4EB428

tetradic

#284EB4 #B42894 #B48E28 #28B448

square

#284EB4 #B42894 #B48E28 #28B448

split-complementary

#284EB4 #B44828 #94B428

monochromatic

#122350 #1D3882 #284EB4 #446BD5 #7693E1

Accessibility & contrast

On white

7.40

#284EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#284EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EB4

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EB4	#FFFFFF	#000000	##FFFFFF
##284EB4	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB7

Deuteranopia (green-blind)

#004FB2

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #284eb4;
/* rgb */ color: rgb(40, 78, 180);
/* oklch */ color: oklch(46.0% 0.168 264.9);

Tailwind

colors: {
  custom: {
    50: '#787fcb',
    500: '#284eb4',
    950: '#000000',
  },
}

SCSS

$custom: #284eb4;
$custom-light: #787fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#284eb4",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 180
  },
  "hsl": {
    "h": 223.714,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.46008,
    "c": 0.16792,
    "h": 264.9
  },
  "luminance": 0.09195
}

Semantic roles & 50–950 ramp

primary

#284EB4

secondary

#C8B070

accent

#BA41E7

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284EB4

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

Preview Lab → · Contrast checker → · Palette generator →