#284FA6#284FA6

#284FA6 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.1% C 0.147 H 263.5°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#284FA6
RGB	rgb(40, 79, 166)
HSL	hsl(221, 61%, 40%)
HSV	hsv(221, 76%, 65%)
CMYK	cmyk(75.9%, 52.4%, 0%, 34.9%)
CIE-LAB	lab(35.59, 17.95, -50.89)
CIE-LCH	lch(35.59, 53.96, 289.43°)
OKLab	oklab(45.1% -0.0168 -0.1464)
OKLCH	oklch(45.1% 0.147 263.5)
XYZ	xyz(10.5515, 8.7951, 37.2105)
Luminance	0.0880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284FA6 #A67F28

analogous

#288EA6 #284FA6 #4028A6

triadic

#284FA6 #A6284F #4FA628

tetradic

#284FA6 #A6288E #A67F28 #28A640

square

#284FA6 #A6288E #A67F28 #28A640

split-complementary

#284FA6 #A64028 #8EA628

monochromatic

#102043 #1C3875 #284FA6 #3B69D0 #6D8FDC

Accessibility & contrast

On white

7.61

#284FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#284FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284FA6

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284FA6	#FFFFFF	#000000	##FFFFFF
##284FA6	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#155AA9

Deuteranopia (green-blind)

#004EA4

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #284fa6;
/* rgb */ color: rgb(40, 79, 166);
/* oklch */ color: oklch(45.1% 0.147 263.5);

Tailwind

colors: {
  custom: {
    50: '#747fc1',
    500: '#284fa6',
    950: '#000000',
  },
}

SCSS

$custom: #284fa6;
$custom-light: #747fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#284fa6",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 166
  },
  "hsl": {
    "h": 221.429,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.45097,
    "c": 0.14741,
    "h": 263.5
  },
  "luminance": 0.08796
}

Semantic roles & 50–950 ramp

primary

#284FA6

secondary

#C2A667

accent

#B344E4

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #284FA6

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

Preview Lab → · Contrast checker → · Palette generator →