#28448B#28448B

#28448B is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.6% C 0.123 H 265.2°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#28448B
RGB	rgb(40, 68, 139)
HSL	hsl(223, 55%, 35%)
HSV	hsv(223, 71%, 55%)
CMYK	cmyk(71.2%, 51.1%, 0%, 45.5%)
CIE-LAB	lab(30.52, 14.91, -42.70)
CIE-LCH	lch(30.52, 45.23, 289.25°)
OKLab	oklab(40.63% -0.0104 -0.1225)
OKLCH	oklch(40.63% 0.123 265.2)
XYZ	xyz(7.6008, 6.4487, 25.2652)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28448B #8B6F28

analogous

#28768B #28448B #3D288B

triadic

#28448B #8B2844 #448B28

tetradic

#28448B #8B2876 #8B6F28 #288B3D

square

#28448B #8B2876 #8B6F28 #288B3D

split-complementary

#28448B #8B3D28 #768B28

monochromatic

#0D162C #1A2D5B #28448B #365BBB #5D7ED0

Accessibility & contrast

On white

9.17

#28448B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#28448B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28448B

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28448B	#FFFFFF	#000000	##FFFFFF
##28448B	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4D8E

Deuteranopia (green-blind)

#00448A

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #28448b;
/* rgb */ color: rgb(40, 68, 139);
/* oklch */ color: oklch(40.6% 0.123 265.2);

Tailwind

colors: {
  custom: {
    50: '#6f77ad',
    500: '#28448b',
    950: '#000000',
  },
}

SCSS

$custom: #28448b;
$custom-light: #6f77ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28448b",
  "rgb": {
    "r": 40,
    "g": 68,
    "b": 139
  },
  "hsl": {
    "h": 223.03,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40627,
    "c": 0.12299,
    "h": 265.2
  },
  "luminance": 0.06449
}

Semantic roles & 50–950 ramp

primary

#28448B

secondary

#B69C59

accent

#B449DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28448B

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

Preview Lab → · Contrast checker → · Palette generator →