#284EB0#284EB0

#284EB0 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.7% C 0.162 H 264.7°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#284EB0
RGB	rgb(40, 78, 176)
HSL	hsl(223, 63%, 42%)
HSV	hsv(223, 77%, 69%)
CMYK	cmyk(77.3%, 55.7%, 0%, 31%)
CIE-LAB	lab(36.05, 22.47, -56.09)
CIE-LCH	lch(36.05, 60.42, 291.84°)
OKLab	oklab(45.68% -0.0151 -0.1618)
OKLCH	oklch(45.68% 0.162 264.7)
XYZ	xyz(11.4332, 9.0332, 42.2069)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EB0 #B08A28

analogous

#2892B0 #284EB0 #4628B0

triadic

#284EB0 #B0284E #4EB028

tetradic

#284EB0 #B02892 #B08A28 #28B046

square

#284EB0 #B02892 #B08A28 #28B046

split-complementary

#284EB0 #B04628 #92B028

monochromatic

#11224C #1D387E #284EB0 #416AD4 #7391DF

Accessibility & contrast

On white

7.48

#284EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#284EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EB0

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EB0	#FFFFFF	#000000	##FFFFFF
##284EB0	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB3

Deuteranopia (green-blind)

#004FAE

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284eb0;
/* rgb */ color: rgb(40, 78, 176);
/* oklch */ color: oklch(45.7% 0.162 264.7);

Tailwind

colors: {
  custom: {
    50: '#777fc8',
    500: '#284eb0',
    950: '#000000',
  },
}

SCSS

$custom: #284eb0;
$custom-light: #777fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#284eb0",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 176
  },
  "hsl": {
    "h": 223.235,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4568,
    "c": 0.16247,
    "h": 264.7
  },
  "luminance": 0.09034
}

Semantic roles & 50–950 ramp

primary

#284EB0

secondary

#C6AE6D

accent

#B842E6

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284EB0

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

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