#284DB0#284DB0

#284DB0 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.164 H 265.0°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#284DB0
RGB	rgb(40, 77, 176)
HSL	hsl(224, 63%, 42%)
HSV	hsv(224, 77%, 69%)
CMYK	cmyk(77.3%, 56.2%, 0%, 31%)
CIE-LAB	lab(35.78, 23.14, -56.53)
CIE-LCH	lch(35.78, 61.08, 292.26°)
OKLab	oklab(45.48% -0.0144 -0.1631)
OKLCH	oklch(45.48% 0.164 265)
XYZ	xyz(11.3627, 8.8922, 42.1834)
Luminance	0.0889 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284DB0 #B08B28

analogous

#2891B0 #284DB0 #4728B0

triadic

#284DB0 #B0284D #4DB028

tetradic

#284DB0 #B02891 #B08B28 #28B047

square

#284DB0 #B02891 #B08B28 #28B047

split-complementary

#284DB0 #B04728 #91B028

monochromatic

#11214C #1D377E #284DB0 #4169D4 #7391DF

Accessibility & contrast

On white

7.56

#284DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#284DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284DB0

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284DB0	#FFFFFF	#000000	##FFFFFF
##284DB0	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB3

Deuteranopia (green-blind)

#004EAE

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #284db0;
/* rgb */ color: rgb(40, 77, 176);
/* oklch */ color: oklch(45.5% 0.164 265.0);

Tailwind

colors: {
  custom: {
    50: '#777ec8',
    500: '#284db0',
    950: '#000000',
  },
}

SCSS

$custom: #284db0;
$custom-light: #777ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#284db0",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 176
  },
  "hsl": {
    "h": 223.676,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45475,
    "c": 0.16372,
    "h": 265
  },
  "luminance": 0.08893
}

Semantic roles & 50–950 ramp

primary

#284DB0

secondary

#C6AE6D

accent

#B942E6

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284DB0

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

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