#284E8D#284E8D

#284E8D is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.0% C 0.113 H 259.9°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#284E8D
RGB	rgb(40, 78, 141)
HSL	hsl(217, 56%, 35%)
HSV	hsv(217, 72%, 55%)
CMYK	cmyk(71.6%, 44.7%, 0%, 44.7%)
CIE-LAB	lab(33.61, 8.93, -38.96)
CIE-LCH	lch(33.61, 39.97, 282.91°)
OKLab	oklab(43.04% -0.0197 -0.1114)
OKLCH	oklch(43.04% 0.113 259.9)
XYZ	xyz(8.4055, 7.8221, 26.2610)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284E8D #8D6728

analogous

#28808D #284E8D #35288D

triadic

#284E8D #8D284E #4E8D28

tetradic

#284E8D #8D2880 #8D6728 #288D35

square

#284E8D #8D2880 #8D6728 #288D35

split-complementary

#284E8D #8D3528 #808D28

monochromatic

#0D192E #1A345D #284E8D #3668BD #5E89D1

Accessibility & contrast

On white

8.19

#284E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#284E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284E8D

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284E8D	#FFFFFF	#000000	##FFFFFF
##284E8D	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)

#2F548F

Deuteranopia (green-blind)

#1E4B8C

Tritanopia (blue-blind)

#005D66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #284e8d;
/* rgb */ color: rgb(40, 78, 141);
/* oklch */ color: oklch(43.0% 0.113 259.9);

Tailwind

colors: {
  custom: {
    50: '#6f7faf',
    500: '#284e8d',
    950: '#000000',
  },
}

SCSS

$custom: #284e8d;
$custom-light: #6f7faf;
$custom-dark: #000000;

JSON

{
  "hex": "#284e8d",
  "rgb": {
    "r": 40,
    "g": 78,
    "b": 141
  },
  "hsl": {
    "h": 217.426,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43042,
    "c": 0.11312,
    "h": 259.9
  },
  "luminance": 0.07823
}

Semantic roles & 50–950 ramp

primary

#284E8D

secondary

#B7945A

accent

#A749DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #284E8D

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

Preview Lab → · Contrast checker → · Palette generator →