#28355B#28355B

#28355B is a dark, moderate blue. Relative luminance 0.038; OKLCH L 33.7% C 0.069 H 268.3°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#28355B
RGB	rgb(40, 53, 91)
HSL	hsl(225, 39%, 26%)
HSV	hsv(225, 56%, 36%)
CMYK	cmyk(56%, 41.8%, 0%, 64.3%)
CIE-LAB	lab(22.84, 7.04, -24.49)
CIE-LCH	lch(22.84, 25.48, 286.05°)
OKLab	oklab(33.73% -0.0021 -0.0693)
OKLCH	oklch(33.73% 0.069 268.3)
XYZ	xyz(4.0359, 3.7524, 10.4071)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28355B #5B4E28

analogous

#284E5B #28355B #34285B

triadic

#28355B #5B2835 #355B28

tetradic

#28355B #5B284E #5B4E28 #285B34

square

#28355B #5B284E #5B4E28 #285B34

split-complementary

#28355B #5B3428 #4E5B28

monochromatic

#090C15 #151C30 #28355B #3B4E86 #4D67B0

Accessibility & contrast

On white

12.00

#28355B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#28355B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28355B

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28355B	#FFFFFF	#000000	##FFFFFF
##28355B	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26395D

Deuteranopia (green-blind)

#20345A

Tritanopia (blue-blind)

#103D43

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #28355b;
/* rgb */ color: rgb(40, 53, 91);
/* oklch */ color: oklch(33.7% 0.069 268.3);

Tailwind

colors: {
  custom: {
    50: '#666c89',
    500: '#28355b',
    950: '#000000',
  },
}

SCSS

$custom: #28355b;
$custom-light: #666c89;
$custom-dark: #000000;

JSON

{
  "hex": "#28355b",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 91
  },
  "hsl": {
    "h": 224.706,
    "s": 38.931,
    "l": 25.686
  },
  "oklch": {
    "l": 0.33725,
    "c": 0.06931,
    "h": 268.3
  },
  "luminance": 0.03753
}

Semantic roles & 50–950 ramp

primary

#28355B

secondary

#8E7E51

accent

#B159CF

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#06060B

muted

#7A7A7C

Preview Lab

Preview with #28355B

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

Preview Lab → · Contrast checker → · Palette generator →