#284C8E#284C8E

#284C8E is a dark, moderate blue. Relative luminance 0.076; OKLCH L 42.7% C 0.117 H 261.4°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#284C8E
RGB	rgb(40, 76, 142)
HSL	hsl(219, 56%, 36%)
HSV	hsv(219, 72%, 56%)
CMYK	cmyk(71.8%, 46.5%, 0%, 44.3%)
CIE-LAB	lab(33.08, 10.65, -40.43)
CIE-LCH	lch(33.08, 41.81, 284.76°)
OKLab	oklab(42.65% -0.0176 -0.1157)
OKLCH	oklch(42.65% 0.117 261.4)
XYZ	xyz(8.3403, 7.5721, 26.6080)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C8E #8E6A28

analogous

#287F8E #284C8E #37288E

triadic

#284C8E #8E284C #4C8E28

tetradic

#284C8E #8E287F #8E6A28 #288E37

square

#284C8E #8E287F #8E6A28 #288E37

split-complementary

#284C8E #8E3728 #7F8E28

monochromatic

#0D192F #1B325E #284C8E #3566BE #5F87D2

Accessibility & contrast

On white

8.35

#284C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#284C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C8E

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C8E	#FFFFFF	#000000	##FFFFFF
##284C8E	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5390

Deuteranopia (green-blind)

#17498D

Tritanopia (blue-blind)

#005B66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284c8e;
/* rgb */ color: rgb(40, 76, 142);
/* oklch */ color: oklch(42.7% 0.117 261.4);

Tailwind

colors: {
  custom: {
    50: '#6f7daf',
    500: '#284c8e',
    950: '#000000',
  },
}

SCSS

$custom: #284c8e;
$custom-light: #6f7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#284c8e",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 142
  },
  "hsl": {
    "h": 218.824,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42651,
    "c": 0.11706,
    "h": 261.4
  },
  "luminance": 0.07573
}

Semantic roles & 50–950 ramp

primary

#284C8E

secondary

#B7975B

accent

#AA48DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284C8E

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

Preview Lab → · Contrast checker → · Palette generator →