#28366B#28366B

#28366B is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.094 H 269.9°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#28366B
RGB	rgb(40, 54, 107)
HSL	hsl(227, 46%, 29%)
HSV	hsv(227, 63%, 42%)
CMYK	cmyk(62.6%, 49.5%, 0%, 58%)
CIE-LAB	lab(24.16, 12.30, -32.78)
CIE-LCH	lch(24.16, 35.01, 290.57°)
OKLab	oklab(35.07% -0.0002 -0.0936)
OKLCH	oklch(35.07% 0.094 269.9)
XYZ	xyz(4.8472, 4.1506, 14.4528)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28366B #6B5D28

analogous

#28586B #28366B #3C286B

triadic

#28366B #6B2836 #366B28

tetradic

#28366B #6B2858 #6B5D28 #286B3C

square

#28366B #6B2858 #6B5D28 #286B3C

split-complementary

#28366B #6B3C28 #586B28

monochromatic

#080B16 #17203E #28366B #394C98 #5067BE

Accessibility & contrast

On white

11.47

#28366B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#28366B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28366B

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28366B	#FFFFFF	#000000	##FFFFFF
##28366B	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3D6D

Deuteranopia (green-blind)

#12376A

Tritanopia (blue-blind)

#00424B

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28366b;
/* rgb */ color: rgb(40, 54, 107);
/* oklch */ color: oklch(35.1% 0.094 269.9);

Tailwind

colors: {
  custom: {
    50: '#696c96',
    500: '#28366b',
    950: '#000000',
  },
}

SCSS

$custom: #28366b;
$custom-light: #696c96;
$custom-dark: #000000;

JSON

{
  "hex": "#28366b",
  "rgb": {
    "r": 40,
    "g": 54,
    "b": 107
  },
  "hsl": {
    "h": 227.463,
    "s": 45.578,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35074,
    "c": 0.09357,
    "h": 269.9
  },
  "luminance": 0.04151
}

Semantic roles & 50–950 ramp

primary

#28366B

secondary

#9D8E51

accent

#BA53D5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #28366B

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

Preview Lab → · Contrast checker → · Palette generator →