#284E88#284E88

#284E88 is a dark, moderate blue. Relative luminance 0.077; OKLCH L 42.7% C 0.106 H 258.7°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#284E88
RGB	rgb(40, 78, 136)
HSL	hsl(216, 55%, 35%)
HSV	hsv(216, 71%, 53%)
CMYK	cmyk(70.6%, 42.6%, 0%, 46.7%)
CIE-LAB	lab(33.30, 7.00, -36.39)
CIE-LCH	lch(33.30, 37.06, 280.89°)
OKLab	oklab(42.7% -0.0208 -0.1038)
OKLCH	oklch(42.7% 0.106 258.7)
XYZ	xyz(8.0418, 7.6766, 24.3457)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E88 #886228

analogous

#287E88 #284E88 #322888

triadic

#284E88 #88284E #4E8828

tetradic

#284E88 #88287E #886228 #288832

square

#284E88 #88287E #886228 #288832

split-complementary

#284E88 #883228 #7E8828

monochromatic

#0C1829 #1A3359 #284E88 #3669B7 #5B89CF

Accessibility & contrast

On white

8.28

#284E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#284E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E88

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E88	#FFFFFF	#000000	##FFFFFF
##284E88	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33538A

Deuteranopia (green-blind)

#244A87

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284e88;
/* rgb */ color: rgb(40, 78, 136);
/* oklch */ color: oklch(42.7% 0.106 258.7);

Tailwind

colors: {
  custom: {
    50: '#6e7fab',
    500: '#284e88',
    950: '#000000',
  },
}

SCSS

$custom: #284e88;
$custom-light: #6e7fab;
$custom-dark: #000000;

JSON

{
  "hex": "#284e88",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 136
  },
  "hsl": {
    "h": 216.25,
    "s": 54.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42702,
    "c": 0.10589,
    "h": 258.7
  },
  "luminance": 0.07677
}

Semantic roles & 50–950 ramp

primary

#284E88

secondary

#B49058

accent

#A34ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #284E88

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

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