#284D89#284D89

#284D89 is a dark, moderate blue. Relative luminance 0.076; OKLCH L 42.5% C 0.109 H 259.6°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#284D89
RGB	rgb(40, 77, 137)
HSL	hsl(217, 55%, 35%)
HSV	hsv(217, 71%, 54%)
CMYK	cmyk(70.8%, 43.8%, 0%, 46.3%)
CIE-LAB	lab(33.06, 8.05, -37.39)
CIE-LCH	lch(33.06, 38.25, 282.16°)
OKLab	oklab(42.54% -0.0196 -0.1068)
OKLCH	oklch(42.54% 0.109 259.6)
XYZ	xyz(8.0427, 7.5642, 24.6982)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284D89 #896428

analogous

#287E89 #284D89 #332889

triadic

#284D89 #89284D #4D8928

tetradic

#284D89 #89287E #896428 #288933

square

#284D89 #89287E #896428 #288933

split-complementary

#284D89 #893328 #7E8928

monochromatic

#0C182A #1A325A #284D89 #3668B8 #5C88CF

Accessibility & contrast

On white

8.36

#284D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#284D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284D89

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284D89	#FFFFFF	#000000	##FFFFFF
##284D89	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30538B

Deuteranopia (green-blind)

#204A88

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284d89;
/* rgb */ color: rgb(40, 77, 137);
/* oklch */ color: oklch(42.5% 0.109 259.6);

Tailwind

colors: {
  custom: {
    50: '#6e7eac',
    500: '#284d89',
    950: '#000000',
  },
}

SCSS

$custom: #284d89;
$custom-light: #6e7eac;
$custom-dark: #000000;

JSON

{
  "hex": "#284d89",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 137
  },
  "hsl": {
    "h": 217.113,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.42535,
    "c": 0.10857,
    "h": 259.6
  },
  "luminance": 0.07565
}

Semantic roles & 50–950 ramp

primary

#284D89

secondary

#B59158

accent

#A64ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284D89

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

Preview Lab → · Contrast checker → · Palette generator →