#284F88#284F88

#284F88 is a dark, moderate blue. Relative luminance 0.078; OKLCH L 42.9% C 0.105 H 258.0°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#284F88
RGB	rgb(40, 79, 136)
HSL	hsl(216, 55%, 35%)
HSV	hsv(216, 71%, 53%)
CMYK	cmyk(70.6%, 41.9%, 0%, 46.7%)
CIE-LAB	lab(33.60, 6.34, -35.90)
CIE-LCH	lch(33.60, 36.46, 280.01°)
OKLab	oklab(42.94% -0.0218 -0.1024)
OKLCH	oklch(42.94% 0.105 258)
XYZ	xyz(8.1134, 7.8198, 24.3696)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284F88 #886128

analogous

#287F88 #284F88 #312888

triadic

#284F88 #88284F #4F8828

tetradic

#284F88 #88287F #886128 #288831

square

#284F88 #88287F #886128 #288831

split-complementary

#284F88 #883128 #7F8828

monochromatic

#0C1829 #1A3459 #284F88 #366AB7 #5B8ACF

Accessibility & contrast

On white

8.19

#284F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#284F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284F88

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284F88	#FFFFFF	#000000	##FFFFFF
##284F88	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35548A

Deuteranopia (green-blind)

#264B87

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284f88;
/* rgb */ color: rgb(40, 79, 136);
/* oklch */ color: oklch(42.9% 0.105 258.0);

Tailwind

colors: {
  custom: {
    50: '#6e7fab',
    500: '#284f88',
    950: '#000000',
  },
}

SCSS

$custom: #284f88;
$custom-light: #6e7fab;
$custom-dark: #000000;

JSON

{
  "hex": "#284f88",
  "rgb": {
    "r": 40,
    "g": 79,
    "b": 136
  },
  "hsl": {
    "h": 215.625,
    "s": 54.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42939,
    "c": 0.10469,
    "h": 258
  },
  "luminance": 0.07821
}

Semantic roles & 50–950 ramp

primary

#284F88

secondary

#B48F58

accent

#A24ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #284F88

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

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