#28409B#28409B

#28409B is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.151 H 267.8°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#28409B
RGB	rgb(40, 64, 155)
HSL	hsl(227, 59%, 38%)
HSV	hsv(227, 74%, 61%)
CMYK	cmyk(74.2%, 58.7%, 0%, 39.2%)
CIE-LAB	lab(30.60, 23.80, -52.35)
CIE-LCH	lch(30.60, 57.51, 294.45°)
OKLab	oklab(41.07% -0.0057 -0.151)
OKLCH	oklch(41.07% 0.151 267.8)
XYZ	xyz(8.6228, 6.4836, 31.8010)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28409B #9B8328

analogous

#28799B #28409B #49289B

triadic

#28409B #9B2840 #409B28

tetradic

#28409B #9B2879 #9B8328 #289B49

square

#28409B #9B2879 #9B8328 #289B49

split-complementary

#28409B #9B4928 #799B28

monochromatic

#0F183A #1B2C6A #28409B #3554CB #667ED7

Accessibility & contrast

On white

9.14

#28409B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#28409B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28409B

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28409B	#FFFFFF	#000000	##FFFFFF
##28409B	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9E

Deuteranopia (green-blind)

#004399

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #28409b;
/* rgb */ color: rgb(40, 64, 155);
/* oklch */ color: oklch(41.1% 0.151 267.8);

Tailwind

colors: {
  custom: {
    50: '#7374b9',
    500: '#28409b',
    950: '#000000',
  },
}

SCSS

$custom: #28409b;
$custom-light: #7374b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28409b",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 155
  },
  "hsl": {
    "h": 227.478,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41072,
    "c": 0.15111,
    "h": 267.8
  },
  "luminance": 0.06484
}

Semantic roles & 50–950 ramp

primary

#28409B

secondary

#BDAA61

accent

#C146E2

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #28409B

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

Preview Lab → · Contrast checker → · Palette generator →