#28255B#28255B

#28255B is a dark, moderate blue. Relative luminance 0.025; OKLCH L 30.1% C 0.094 H 281.7°. Best body text is #FFFFFF at 13.94:1 contrast (WCAG AA passes).

Color values

HEX	#28255B
RGB	rgb(40, 37, 91)
HSL	hsl(243, 42%, 25%)
HSV	hsv(243, 59%, 36%)
CMYK	cmyk(56%, 59.3%, 0%, 64.3%)
CIE-LAB	lab(18.05, 18.37, -32.13)
CIE-LCH	lch(18.05, 37.01, 299.75°)
OKLab	oklab(30.1% 0.019 -0.0919)
OKLCH	oklch(30.1% 0.094 281.7)
XYZ	xyz(3.4244, 2.5294, 10.2033)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28255B #585B25

analogous

#253D5B #28255B #43255B

triadic

#28255B #5B2825 #255B28

tetradic

#28255B #5B253D #585B25 #255B43

square

#28255B #5B253D #585B25 #255B43

split-complementary

#28255B #5B4325 #3D5B25

monochromatic

#0A0916 #15132F #28255B #3B3787 #4E48B2

Accessibility & contrast

On white

13.94

#28255B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#28255B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28255B

13.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28255B	#FFFFFF	#000000	##FFFFFF
##28255B	1.00	13.94	1.51	13.94
#FFFFFF	13.94	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#042E5D

Deuteranopia (green-blind)

#002A5A

Tritanopia (blue-blind)

#13313C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #28255b;
/* rgb */ color: rgb(40, 37, 91);
/* oklch */ color: oklch(30.1% 0.094 281.7);

Tailwind

colors: {
  custom: {
    50: '#675f8a',
    500: '#28255b',
    950: '#000000',
  },
}

SCSS

$custom: #28255b;
$custom-light: #675f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#28255b",
  "rgb": {
    "r": 40,
    "g": 37,
    "b": 91
  },
  "hsl": {
    "h": 243.333,
    "s": 42.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.30096,
    "c": 0.09381,
    "h": 281.7
  },
  "luminance": 0.0253
}

Semantic roles & 50–950 ramp

primary

#28255B

secondary

#8B8E4D

accent

#D256CB

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040C

muted

#7A797D

Preview Lab

Preview with #28255B

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

Preview Lab → · Contrast checker → · Palette generator →