#284AB4#284AB4

#284AB4 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.2% C 0.173 H 266.0°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#284AB4
RGB	rgb(40, 74, 180)
HSL	hsl(225, 64%, 43%)
HSV	hsv(225, 78%, 71%)
CMYK	cmyk(77.8%, 58.9%, 0%, 29.4%)
CIE-LAB	lab(35.29, 26.66, -59.70)
CIE-LCH	lch(35.29, 65.38, 294.06°)
OKLab	oklab(45.21% -0.0121 -0.1724)
OKLCH	oklch(45.21% 0.173 266)
XYZ	xyz(11.5592, 8.6426, 44.2302)
Luminance	0.0864 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284AB4 #B49228

analogous

#2890B4 #284AB4 #4C28B4

triadic

#284AB4 #B4284A #4AB428

tetradic

#284AB4 #B42890 #B49228 #28B44C

square

#284AB4 #B42890 #B49228 #28B44C

split-complementary

#284AB4 #B44C28 #90B428

monochromatic

#122150 #1D3582 #284AB4 #4467D5 #7690E1

Accessibility & contrast

On white

7.70

#284AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#284AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284AB4

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284AB4	#FFFFFF	#000000	##FFFFFF
##284AB4	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB8

Deuteranopia (green-blind)

#004DB2

Tritanopia (blue-blind)

#006578

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #284ab4;
/* rgb */ color: rgb(40, 74, 180);
/* oklch */ color: oklch(45.2% 0.173 266.0);

Tailwind

colors: {
  custom: {
    50: '#787ccb',
    500: '#284ab4',
    950: '#000000',
  },
}

SCSS

$custom: #284ab4;
$custom-light: #787ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#284ab4",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 180
  },
  "hsl": {
    "h": 225.429,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.45207,
    "c": 0.17285,
    "h": 266
  },
  "luminance": 0.08644
}

Semantic roles & 50–950 ramp

primary

#284AB4

secondary

#C8B370

accent

#BE41E7

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #284AB4

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

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