#284EB2#284EB2

#284EB2 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.8% C 0.165 H 264.8°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#284EB2
RGB	rgb(40, 78, 178)
HSL	hsl(223, 63%, 43%)
HSV	hsv(223, 78%, 70%)
CMYK	cmyk(77.5%, 56.2%, 0%, 30.2%)
CIE-LAB	lab(36.20, 23.24, -57.02)
CIE-LCH	lch(36.20, 61.58, 292.17°)
OKLab	oklab(45.84% -0.015 -0.1645)
OKLCH	oklch(45.84% 0.165 264.8)
XYZ	xyz(11.6325, 9.1129, 43.2567)
Luminance	0.0911 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284EB2 #B28C28

analogous

#2893B2 #284EB2 #4728B2

triadic

#284EB2 #B2284E #4EB228

tetradic

#284EB2 #B22893 #B28C28 #28B247

square

#284EB2 #B22893 #B28C28 #28B247

split-complementary

#284EB2 #B24728 #93B228

monochromatic

#12224E #1D3880 #284EB2 #436BD5 #7592E0

Accessibility & contrast

On white

7.44

#284EB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#284EB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284EB2

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284EB2	#FFFFFF	#000000	##FFFFFF
##284EB2	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB5

Deuteranopia (green-blind)

#004FB0

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #284eb2;
/* rgb */ color: rgb(40, 78, 178);
/* oklch */ color: oklch(45.8% 0.165 264.8);

Tailwind

colors: {
  custom: {
    50: '#777fca',
    500: '#284eb2',
    950: '#000000',
  },
}

SCSS

$custom: #284eb2;
$custom-light: #777fca;
$custom-dark: #000000;

JSON

{
  "hex": "#284eb2",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 178
  },
  "hsl": {
    "h": 223.478,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45844,
    "c": 0.1652,
    "h": 264.8
  },
  "luminance": 0.09114
}

Semantic roles & 50–950 ramp

primary

#284EB2

secondary

#C7AF6F

accent

#B941E6

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #284EB2

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

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