#28256B#28256B

#28256B is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.5% C 0.118 H 279.1°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#28256B
RGB	rgb(40, 37, 107)
HSL	hsl(243, 49%, 28%)
HSV	hsv(243, 65%, 42%)
CMYK	cmyk(62.6%, 65.4%, 0%, 58%)
CIE-LAB	lab(19.37, 24.15, -40.52)
CIE-LCH	lch(19.37, 47.17, 300.80°)
OKLab	oklab(31.49% 0.0186 -0.1165)
OKLCH	oklch(31.49% 0.118 279.1)
XYZ	xyz(4.1896, 2.8355, 14.2336)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28256B #686B25

analogous

#25456B #28256B #4B256B

triadic

#28256B #6B2825 #256B28

tetradic

#28256B #6B2545 #686B25 #256B4B

square

#28256B #6B2545 #686B25 #256B4B

split-complementary

#28256B #6B4B25 #456B25

monochromatic

#080817 #17153E #28256B #393598 #4F4AC0

Accessibility & contrast

On white

13.40

#28256B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#28256B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28256B

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28256B	#FFFFFF	#000000	##FFFFFF
##28256B	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326D

Deuteranopia (green-blind)

#002C6A

Tritanopia (blue-blind)

#003644

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #28256b;
/* rgb */ color: rgb(40, 37, 107);
/* oklch */ color: oklch(31.5% 0.118 279.1);

Tailwind

colors: {
  custom: {
    50: '#6a5f96',
    500: '#28256b',
    950: '#000000',
  },
}

SCSS

$custom: #28256b;
$custom-light: #6a5f96;
$custom-dark: #000000;

JSON

{
  "hex": "#28256b",
  "rgb": {
    "r": 40,
    "g": 37,
    "b": 107
  },
  "hsl": {
    "h": 242.571,
    "s": 48.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.31489,
    "c": 0.118,
    "h": 279.1
  },
  "luminance": 0.02836
}

Semantic roles & 50–950 ramp

primary

#28256B

secondary

#9B9E4E

accent

#D850D2

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040D

muted

#7A797E

Preview Lab

Preview with #28256B

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

Preview Lab → · Contrast checker → · Palette generator →