#28407B#28407B

#28407B is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.104 H 265.2°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#28407B
RGB	rgb(40, 64, 123)
HSL	hsl(223, 51%, 32%)
HSV	hsv(223, 67%, 48%)
CMYK	cmyk(67.5%, 48%, 0%, 51.8%)
CIE-LAB	lab(28.24, 11.47, -36.41)
CIE-LCH	lch(28.24, 38.17, 287.49°)
OKLab	oklab(38.54% -0.0087 -0.1041)
OKLCH	oklch(38.54% 0.104 265.2)
XYZ	xyz(6.2824, 5.5474, 19.4747)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28407B #7B6328

analogous

#286A7B #28407B #3A287B

triadic

#28407B #7B2840 #407B28

tetradic

#28407B #7B286A #7B6328 #287B3A

square

#28407B #7B286A #7B6328 #287B3A

split-complementary

#28407B #7B3A28 #6A7B28

monochromatic

#0A101F #19284D #28407B #3758A9 #5677C8

Accessibility & contrast

On white

9.95

#28407B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#28407B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28407B

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28407B	#FFFFFF	#000000	##FFFFFF
##28407B	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23477D

Deuteranopia (green-blind)

#143F7A

Tritanopia (blue-blind)

#004E57

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #28407b;
/* rgb */ color: rgb(40, 64, 123);
/* oklch */ color: oklch(38.5% 0.104 265.2);

Tailwind

colors: {
  custom: {
    50: '#6c74a1',
    500: '#28407b',
    950: '#000000',
  },
}

SCSS

$custom: #28407b;
$custom-light: #6c74a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28407b",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 123
  },
  "hsl": {
    "h": 222.651,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38536,
    "c": 0.10448,
    "h": 265.2
  },
  "luminance": 0.05548
}

Semantic roles & 50–950 ramp

primary

#28407B

secondary

#AD9352

accent

#B24DDA

background

#F6F7FA

surface

#ECEDF3

border

#C7C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #28407B

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

Preview Lab → · Contrast checker → · Palette generator →