#284F89#284F89

#284F89 is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.0% C 0.106 H 258.3°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#284F89
RGB	rgb(40, 79, 137)
HSL	hsl(216, 55%, 35%)
HSV	hsv(216, 71%, 54%)
CMYK	cmyk(70.8%, 42.3%, 0%, 46.3%)
CIE-LAB	lab(33.67, 6.72, -36.42)
CIE-LCH	lch(33.67, 37.04, 280.46°)
OKLab	oklab(43.01% -0.0216 -0.1039)
OKLCH	oklch(43.01% 0.106 258.3)
XYZ	xyz(8.1848, 7.8484, 24.7456)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F89 #896228

analogous

#288089 #284F89 #312889

triadic

#284F89 #89284F #4F8928

tetradic

#284F89 #892880 #896228 #288931

square

#284F89 #892880 #896228 #288931

split-complementary

#284F89 #893128 #808928

monochromatic

#0C182A #1A345A #284F89 #366AB8 #5C8ACF

Accessibility & contrast

On white

8.17

#284F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#284F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F89

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F89	#FFFFFF	#000000	##FFFFFF
##284F89	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34548B

Deuteranopia (green-blind)

#244B88

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284f89;
/* rgb */ color: rgb(40, 79, 137);
/* oklch */ color: oklch(43.0% 0.106 258.3);

Tailwind

colors: {
  custom: {
    50: '#6e7fac',
    500: '#284f89',
    950: '#000000',
  },
}

SCSS

$custom: #284f89;
$custom-light: #6e7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#284f89",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 137
  },
  "hsl": {
    "h": 215.876,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.43005,
    "c": 0.10613,
    "h": 258.3
  },
  "luminance": 0.07849
}

Semantic roles & 50–950 ramp

primary

#284F89

secondary

#B58F58

accent

#A24ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #284F89

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

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