#28518F#28518F

#28518F is a dark, moderate blue. Relative luminance 0.083; OKLCH L 43.9% C 0.112 H 258.6°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#28518F
RGB	rgb(40, 81, 143)
HSL	hsl(216, 56%, 36%)
HSV	hsv(216, 72%, 56%)
CMYK	cmyk(72%, 43.4%, 0%, 43.9%)
CIE-LAB	lab(34.64, 7.71, -38.54)
CIE-LCH	lch(34.64, 39.30, 281.31°)
OKLab	oklab(43.88% -0.0223 -0.1101)
OKLCH	oklch(43.88% 0.112 258.6)
XYZ	xyz(8.7736, 8.3182, 27.1245)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28518F #8F6628

analogous

#28848F #28518F #33288F

triadic

#28518F #8F2851 #518F28

tetradic

#28518F #8F2884 #8F6628 #288F33

square

#28518F #8F2884 #8F6628 #288F33

split-complementary

#28518F #8F3328 #848F28

monochromatic

#0D1B2F #1B365F #28518F #356CBF #5F8DD2

Accessibility & contrast

On white

7.88

#28518F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#28518F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28518F

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28518F	#FFFFFF	#000000	##FFFFFF
##28518F	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335791

Deuteranopia (green-blind)

#224D8E

Tritanopia (blue-blind)

#005F69

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #28518f;
/* rgb */ color: rgb(40, 81, 143);
/* oklch */ color: oklch(43.9% 0.112 258.6);

Tailwind

colors: {
  custom: {
    50: '#6f81b0',
    500: '#28518f',
    950: '#000000',
  },
}

SCSS

$custom: #28518f;
$custom-light: #6f81b0;
$custom-dark: #000000;

JSON

{
  "hex": "#28518f",
  "rgb": {
    "r": 40,
    "g": 81,
    "b": 143
  },
  "hsl": {
    "h": 216.117,
    "s": 56.284,
    "l": 35.882
  },
  "oklch": {
    "l": 0.43877,
    "c": 0.11232,
    "h": 258.6
  },
  "luminance": 0.08319
}

Semantic roles & 50–950 ramp

primary

#28518F

secondary

#B8935B

accent

#A348E0

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #28518F

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

Preview Lab → · Contrast checker → · Palette generator →