#284CA8#284CA8

#284CA8 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.6% C 0.154 H 264.7°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#284CA8
RGB	rgb(40, 76, 168)
HSL	hsl(223, 62%, 41%)
HSV	hsv(223, 76%, 66%)
CMYK	cmyk(76.2%, 54.8%, 0%, 34.1%)
CIE-LAB	lab(34.90, 20.73, -53.20)
CIE-LCH	lch(34.90, 57.10, 291.29°)
OKLab	oklab(44.62% -0.0142 -0.1533)
OKLCH	oklch(44.62% 0.154 264.7)
XYZ	xyz(10.5249, 8.4460, 38.1137)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284CA8 #A88428

analogous

#288CA8 #284CA8 #4428A8

triadic

#284CA8 #A8284C #4CA828

tetradic

#284CA8 #A8288C #A88428 #28A844

square

#284CA8 #A8288C #A88428 #28A844

split-complementary

#284CA8 #A84428 #8CA828

monochromatic

#101F45 #1C3677 #284CA8 #3D66D1 #6E8DDC

Accessibility & contrast

On white

7.81

#284CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#284CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284CA8

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284CA8	#FFFFFF	#000000	##FFFFFF
##284CA8	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AB

Deuteranopia (green-blind)

#004CA6

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #284ca8;
/* rgb */ color: rgb(40, 76, 168);
/* oklch */ color: oklch(44.6% 0.154 264.7);

Tailwind

colors: {
  custom: {
    50: '#757dc3',
    500: '#284ca8',
    950: '#000000',
  },
}

SCSS

$custom: #284ca8;
$custom-light: #757dc3;
$custom-dark: #000000;

JSON

{
  "hex": "#284ca8",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 168
  },
  "hsl": {
    "h": 223.125,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44619,
    "c": 0.15397,
    "h": 264.7
  },
  "luminance": 0.08447
}

Semantic roles & 50–950 ramp

primary

#284CA8

secondary

#C3AA69

accent

#B743E5

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #284CA8

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

Preview Lab → · Contrast checker → · Palette generator →