#284D8E#284D8E

#284D8E is a dark, moderate blue. Relative luminance 0.077; OKLCH L 42.9% C 0.116 H 260.8°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#284D8E
RGB	rgb(40, 77, 142)
HSL	hsl(218, 56%, 36%)
HSV	hsv(218, 72%, 56%)
CMYK	cmyk(71.8%, 45.8%, 0%, 44.3%)
CIE-LAB	lab(33.37, 9.98, -39.95)
CIE-LCH	lch(33.37, 41.18, 284.03°)
OKLab	oklab(42.88% -0.0186 -0.1143)
OKLCH	oklch(42.88% 0.116 260.8)
XYZ	xyz(8.4097, 7.7110, 26.6311)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284D8E #8E6928

analogous

#28808E #284D8E #36288E

triadic

#284D8E #8E284D #4D8E28

tetradic

#284D8E #8E2880 #8E6928 #288E36

square

#284D8E #8E2880 #8E6928 #288E36

split-complementary

#284D8E #8E3628 #808E28

monochromatic

#0D192F #1B335E #284D8E #3567BE #5F88D2

Accessibility & contrast

On white

8.26

#284D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#284D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284D8E

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284D8E	#FFFFFF	#000000	##FFFFFF
##284D8E	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)

#2D5490

Deuteranopia (green-blind)

#194A8D

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #284d8e;
/* rgb */ color: rgb(40, 77, 142);
/* oklch */ color: oklch(42.9% 0.116 260.8);

Tailwind

colors: {
  custom: {
    50: '#6f7eaf',
    500: '#284d8e',
    950: '#000000',
  },
}

SCSS

$custom: #284d8e;
$custom-light: #6f7eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#284d8e",
  "rgb": {
    "r": 40,
    "g": 77,
    "b": 142
  },
  "hsl": {
    "h": 218.235,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.4288,
    "c": 0.1158,
    "h": 260.8
  },
  "luminance": 0.07712
}

Semantic roles & 50–950 ramp

primary

#284D8E

secondary

#B7965B

accent

#A948DF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #284D8E

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

Preview Lab → · Contrast checker → · Palette generator →