#284CA7#284CA7

#284CA7 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.5% C 0.153 H 264.6°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#284CA7
RGB	rgb(40, 76, 167)
HSL	hsl(223, 61%, 41%)
HSV	hsv(223, 76%, 65%)
CMYK	cmyk(76%, 54.5%, 0%, 34.5%)
CIE-LAB	lab(34.82, 20.34, -52.73)
CIE-LCH	lch(34.82, 56.51, 291.10°)
OKLab	oklab(44.54% -0.0143 -0.1519)
OKLCH	oklch(44.54% 0.153 264.6)
XYZ	xyz(10.4321, 8.4089, 37.6250)
Luminance	0.0841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA7 #A78328

analogous

#288BA7 #284CA7 #4328A7

triadic

#284CA7 #A7284C #4CA728

tetradic

#284CA7 #A7288B #A78328 #28A743

square

#284CA7 #A7288B #A78328 #28A743

split-complementary

#284CA7 #A74328 #8BA728

monochromatic

#101F44 #1C3676 #284CA7 #3C66D0 #6D8DDC

Accessibility & contrast

On white

7.83

#284CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#284CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA7

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA7	#FFFFFF	#000000	##FFFFFF
##284CA7	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AA

Deuteranopia (green-blind)

#004CA5

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284ca7;
/* rgb */ color: rgb(40, 76, 167);
/* oklch */ color: oklch(44.5% 0.153 264.6);

Tailwind

colors: {
  custom: {
    50: '#757dc2',
    500: '#284ca7',
    950: '#000000',
  },
}

SCSS

$custom: #284ca7;
$custom-light: #757dc2;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca7",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 167
  },
  "hsl": {
    "h": 222.992,
    "s": 61.353,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44539,
    "c": 0.15258,
    "h": 264.6
  },
  "luminance": 0.0841
}

Semantic roles & 50–950 ramp

primary

#284CA7

secondary

#C3A968

accent

#B743E4

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #284CA7

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

Preview Lab → · Contrast checker → · Palette generator →