#284C8D#284C8D

#284C8D is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.6% C 0.116 H 261.2°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#284C8D
RGB	rgb(40, 76, 141)
HSL	hsl(219, 56%, 35%)
HSV	hsv(219, 72%, 55%)
CMYK	cmyk(71.6%, 46.1%, 0%, 44.7%)
CIE-LAB	lab(33.01, 10.27, -39.92)
CIE-LCH	lch(33.01, 41.22, 284.42°)
OKLab	oklab(42.58% -0.0178 -0.1142)
OKLCH	oklch(42.58% 0.116 261.2)
XYZ	xyz(8.2655, 7.5422, 26.2143)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284C8D #8D6928

analogous

#287E8D #284C8D #36288D

triadic

#284C8D #8D284C #4C8D28

tetradic

#284C8D #8D287E #8D6928 #288D36

square

#284C8D #8D287E #8D6928 #288D36

split-complementary

#284C8D #8D3628 #7E8D28

monochromatic

#0D192E #1A325D #284C8D #3666BD #5E87D1

Accessibility & contrast

On white

8.37

#284C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#284C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284C8D

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284C8D	#FFFFFF	#000000	##FFFFFF
##284C8D	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C538F

Deuteranopia (green-blind)

#18498C

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284c8d;
/* rgb */ color: rgb(40, 76, 141);
/* oklch */ color: oklch(42.6% 0.116 261.2);

Tailwind

colors: {
  custom: {
    50: '#6f7daf',
    500: '#284c8d',
    950: '#000000',
  },
}

SCSS

$custom: #284c8d;
$custom-light: #6f7daf;
$custom-dark: #000000;

JSON

{
  "hex": "#284c8d",
  "rgb": {
    "r": 40,
    "g": 76,
    "b": 141
  },
  "hsl": {
    "h": 218.614,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.4258,
    "c": 0.11561,
    "h": 261.2
  },
  "luminance": 0.07543
}

Semantic roles & 50–950 ramp

primary

#284C8D

secondary

#B7965A

accent

#A949DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284C8D

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

Preview Lab → · Contrast checker → · Palette generator →