#284C9C#284C9C

#284C9C is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.7% C 0.137 H 263.5°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#284C9C
RGB	rgb(40, 76, 156)
HSL	hsl(221, 59%, 38%)
HSV	hsv(221, 74%, 61%)
CMYK	cmyk(74.4%, 51.3%, 0%, 38.8%)
CIE-LAB	lab(34.02, 16.08, -47.41)
CIE-LCH	lch(34.02, 50.06, 288.74°)
OKLab	oklab(43.68% -0.0154 -0.1363)
OKLCH	oklch(43.68% 0.137 263.5)
XYZ	xyz(9.4581, 8.0193, 32.4955)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C9C #9C7828

analogous

#28869C #284C9C #3E289C

triadic

#284C9C #9C284C #4C9C28

tetradic

#284C9C #9C2886 #9C7828 #289C3E

square

#284C9C #9C2886 #9C7828 #289C3E

split-complementary

#284C9C #9C3E28 #869C28

monochromatic

#0F1D3B #1C346B #284C9C #3664CB #678AD8

Accessibility & contrast

On white

8.06

#284C9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#284C9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C9C

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C9C	#FFFFFF	#000000	##FFFFFF
##284C9C	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B569F

Deuteranopia (green-blind)

#004B9A

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #284c9c;
/* rgb */ color: rgb(40, 76, 156);
/* oklch */ color: oklch(43.7% 0.137 263.5);

Tailwind

colors: {
  custom: {
    50: '#727dba',
    500: '#284c9c',
    950: '#000000',
  },
}

SCSS

$custom: #284c9c;
$custom-light: #727dba;
$custom-dark: #000000;

JSON

{
  "hex": "#284c9c",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 156
  },
  "hsl": {
    "h": 221.379,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.4368,
    "c": 0.13714,
    "h": 263.5
  },
  "luminance": 0.0802
}

Semantic roles & 50–950 ramp

primary

#284C9C

secondary

#BEA162

accent

#B245E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #284C9C

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

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