#28356B#28356B

#28356B is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.8% C 0.095 H 270.6°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#28356B
RGB	rgb(40, 53, 107)
HSL	hsl(228, 46%, 29%)
HSV	hsv(228, 63%, 42%)
CMYK	cmyk(62.6%, 50.5%, 0%, 58%)
CIE-LAB	lab(23.86, 13.00, -33.25)
CIE-LCH	lch(23.86, 35.71, 291.35°)
OKLab	oklab(34.85% 0.001 -0.095)
OKLCH	oklch(34.85% 0.095 270.6)
XYZ	xyz(4.8011, 4.0585, 14.4374)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28356B #6B5E28

analogous

#28576B #28356B #3D286B

triadic

#28356B #6B2835 #356B28

tetradic

#28356B #6B2857 #6B5E28 #286B3D

square

#28356B #6B2857 #6B5E28 #286B3D

split-complementary

#28356B #6B3D28 #576B28

monochromatic

#080B16 #171F3E #28356B #394B98 #5065BE

Accessibility & contrast

On white

11.59

#28356B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#28356B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28356B

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28356B	#FFFFFF	#000000	##FFFFFF
##28356B	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3C6D

Deuteranopia (green-blind)

#0F366A

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28356b;
/* rgb */ color: rgb(40, 53, 107);
/* oklch */ color: oklch(34.8% 0.095 270.6);

Tailwind

colors: {
  custom: {
    50: '#696b96',
    500: '#28356b',
    950: '#000000',
  },
}

SCSS

$custom: #28356b;
$custom-light: #696b96;
$custom-dark: #000000;

JSON

{
  "hex": "#28356b",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 107
  },
  "hsl": {
    "h": 228.358,
    "s": 45.578,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34846,
    "c": 0.09501,
    "h": 270.6
  },
  "luminance": 0.04059
}

Semantic roles & 50–950 ramp

primary

#28356B

secondary

#9D8F51

accent

#BC53D5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060D

muted

#7A7A7E

Preview Lab

Preview with #28356B

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

Preview Lab → · Contrast checker → · Palette generator →