#284C81#284C81

#284C81 is a dark, moderate blue. Relative luminance 0.072; OKLCH L 41.8% C 0.098 H 258.0°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#284C81
RGB	rgb(40, 76, 129)
HSL	hsl(216, 53%, 33%)
HSV	hsv(216, 69%, 51%)
CMYK	cmyk(69%, 41.1%, 0%, 49.4%)
CIE-LAB	lab(32.27, 5.65, -33.72)
CIE-LCH	lch(32.27, 34.19, 279.51°)
OKLab	oklab(41.77% -0.0203 -0.096)
OKLCH	oklch(41.77% 0.098 258)
XYZ	xyz(7.4205, 7.2042, 21.7641)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C81 #815D28

analogous

#287881 #284C81 #302881

triadic

#284C81 #81284C #4C8128

tetradic

#284C81 #812878 #815D28 #288130

square

#284C81 #812878 #815D28 #288130

split-complementary

#284C81 #813028 #788128

monochromatic

#0B1524 #1A3052 #284C81 #3668B0 #5887CB

Accessibility & contrast

On white

8.60

#284C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#284C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C81

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C81	#FFFFFF	#000000	##FFFFFF
##284C81	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345083

Deuteranopia (green-blind)

#274880

Tritanopia (blue-blind)

#005860

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #284c81;
/* rgb */ color: rgb(40, 76, 129);
/* oklch */ color: oklch(41.8% 0.098 258.0);

Tailwind

colors: {
  custom: {
    50: '#6c7da6',
    500: '#284c81',
    950: '#000000',
  },
}

SCSS

$custom: #284c81;
$custom-light: #6c7da6;
$custom-dark: #000000;

JSON

{
  "hex": "#284c81",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 129
  },
  "hsl": {
    "h": 215.73,
    "s": 52.663,
    "l": 33.137
  },
  "oklch": {
    "l": 0.41765,
    "c": 0.09816,
    "h": 258
  },
  "luminance": 0.07205
}

Semantic roles & 50–950 ramp

primary

#284C81

secondary

#B08B54

accent

#A24CDC

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #284C81

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

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