#284A7E#284A7E

#284A7E is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.1% C 0.096 H 258.7°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#284A7E
RGB	rgb(40, 74, 126)
HSL	hsl(216, 52%, 33%)
HSV	hsv(216, 68%, 49%)
CMYK	cmyk(68.3%, 41.3%, 0%, 50.6%)
CIE-LAB	lab(31.47, 5.84, -33.12)
CIE-LCH	lch(31.47, 33.63, 280.00°)
OKLab	oklab(41.09% -0.0189 -0.0943)
OKLCH	oklch(41.09% 0.096 258.7)
XYZ	xyz(7.0884, 6.8543, 20.6841)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#284A7E #7E5C28

analogous

#28757E #284A7E #31287E

triadic

#284A7E #7E284A #4A7E28

tetradic

#284A7E #7E2875 #7E5C28 #287E31

square

#284A7E #7E2875 #7E5C28 #287E31

split-complementary

#284A7E #7E3128 #757E28

monochromatic

#0B1321 #192F50 #284A7E #3765AC #5784CA

Accessibility & contrast

On white

8.86

#284A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#284A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #284A7E

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##284A7E	#FFFFFF	#000000	##FFFFFF
##284A7E	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334E80

Deuteranopia (green-blind)

#26467D

Tritanopia (blue-blind)

#00565E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #284a7e;
/* rgb */ color: rgb(40, 74, 126);
/* oklch */ color: oklch(41.1% 0.096 258.7);

Tailwind

colors: {
  custom: {
    50: '#6c7ca4',
    500: '#284a7e',
    950: '#000000',
  },
}

SCSS

$custom: #284a7e;
$custom-light: #6c7ca4;
$custom-dark: #000000;

JSON

{
  "hex": "#284a7e",
  "rgb": {
    "r": 40,
    "g": 74,
    "b": 126
  },
  "hsl": {
    "h": 216.279,
    "s": 51.807,
    "l": 32.549
  },
  "oklch": {
    "l": 0.4109,
    "c": 0.09618,
    "h": 258.7
  },
  "luminance": 0.06855
}

Semantic roles & 50–950 ramp

primary

#284A7E

secondary

#AF8A53

accent

#A34DDB

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #284A7E

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

Preview Lab → · Contrast checker → · Palette generator →