#284E89#284E89

#284E89 is a dark, moderate blue. Relative luminance 0.077; OKLCH L 42.8% C 0.107 H 258.9°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#284E89
RGB	rgb(40, 78, 137)
HSL	hsl(216, 55%, 35%)
HSV	hsv(216, 71%, 54%)
CMYK	cmyk(70.8%, 43.1%, 0%, 46.3%)
CIE-LAB	lab(33.36, 7.39, -36.91)
CIE-LCH	lch(33.36, 37.64, 281.32°)
OKLab	oklab(42.77% -0.0206 -0.1053)
OKLCH	oklch(42.77% 0.107 258.9)
XYZ	xyz(8.1132, 7.7052, 24.7217)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E89 #896328

analogous

#287E89 #284E89 #332889

triadic

#284E89 #89284E #4E8928

tetradic

#284E89 #89287E #896328 #288933

square

#284E89 #89287E #896328 #288933

split-complementary

#284E89 #893328 #7E8928

monochromatic

#0C182A #1A335A #284E89 #3669B8 #5C89CF

Accessibility & contrast

On white

8.26

#284E89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#284E89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E89

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E89	#FFFFFF	#000000	##FFFFFF
##284E89	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32538B

Deuteranopia (green-blind)

#224A88

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284e89;
/* rgb */ color: rgb(40, 78, 137);
/* oklch */ color: oklch(42.8% 0.107 258.9);

Tailwind

colors: {
  custom: {
    50: '#6e7fac',
    500: '#284e89',
    950: '#000000',
  },
}

SCSS

$custom: #284e89;
$custom-light: #6e7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#284e89",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 137
  },
  "hsl": {
    "h": 216.495,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.4277,
    "c": 0.10734,
    "h": 258.9
  },
  "luminance": 0.07706
}

Semantic roles & 50–950 ramp

primary

#284E89

secondary

#B59058

accent

#A44ADE

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #284E89

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

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