#284AA4#284AA4

#284AA4 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.9% C 0.151 H 265.1°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#284AA4
RGB	rgb(40, 74, 164)
HSL	hsl(224, 61%, 40%)
HSV	hsv(224, 76%, 64%)
CMYK	cmyk(75.6%, 54.9%, 0%, 35.7%)
CIE-LAB	lab(34.04, 20.52, -52.19)
CIE-LCH	lch(34.04, 56.08, 291.47°)
OKLab	oklab(43.88% -0.013 -0.1504)
OKLCH	oklch(43.88% 0.151 265.1)
XYZ	xyz(10.0223, 8.0279, 36.1361)
Luminance	0.0803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284AA4 #A48228

analogous

#2888A4 #284AA4 #4428A4

triadic

#284AA4 #A4284A #4AA428

tetradic

#284AA4 #A42888 #A48228 #28A444

square

#284AA4 #A42888 #A48228 #28A444

split-complementary

#284AA4 #A44428 #88A428

monochromatic

#101E42 #1C3473 #284AA4 #3A63CF #6B8ADB

Accessibility & contrast

On white

8.06

#284AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#284AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284AA4

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284AA4	#FFFFFF	#000000	##FFFFFF
##284AA4	1.00	8.06	2.61	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A7

Deuteranopia (green-blind)

#004BA2

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284aa4;
/* rgb */ color: rgb(40, 74, 164);
/* oklch */ color: oklch(43.9% 0.151 265.1);

Tailwind

colors: {
  custom: {
    50: '#747cc0',
    500: '#284aa4',
    950: '#000000',
  },
}

SCSS

$custom: #284aa4;
$custom-light: #747cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#284aa4",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 164
  },
  "hsl": {
    "h": 223.548,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.43879,
    "c": 0.15094,
    "h": 265.1
  },
  "luminance": 0.08029
}

Semantic roles & 50–950 ramp

primary

#284AA4

secondary

#C1A866

accent

#B844E4

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284AA4

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

Preview Lab → · Contrast checker → · Palette generator →