#28509B#28509B

#28509B is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.5% C 0.131 H 261.6°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#28509B
RGB	rgb(40, 80, 155)
HSL	hsl(219, 59%, 38%)
HSV	hsv(219, 74%, 61%)
CMYK	cmyk(74.2%, 48.4%, 0%, 39.2%)
CIE-LAB	lab(35.11, 13.02, -45.05)
CIE-LCH	lch(35.11, 46.89, 286.11°)
OKLab	oklab(44.49% -0.0191 -0.1293)
OKLCH	oklch(44.49% 0.131 261.6)
XYZ	xyz(9.6580, 8.5539, 32.1461)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28509B #9B7328

analogous

#28899B #28509B #39289B

triadic

#28509B #9B2850 #509B28

tetradic

#28509B #9B2889 #9B7328 #289B39

square

#28509B #9B2889 #9B7328 #289B39

split-complementary

#28509B #9B3928 #899B28

monochromatic

#0F1E3A #1B376A #28509B #3569CB #668DD7

Accessibility & contrast

On white

7.75

#28509B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#28509B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28509B

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28509B	#FFFFFF	#000000	##FFFFFF
##28509B	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27589E

Deuteranopia (green-blind)

#074E99

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #28509b;
/* rgb */ color: rgb(40, 80, 155);
/* oklch */ color: oklch(44.5% 0.131 261.6);

Tailwind

colors: {
  custom: {
    50: '#7280b9',
    500: '#28509b',
    950: '#000000',
  },
}

SCSS

$custom: #28509b;
$custom-light: #7280b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28509b",
  "rgb": {
    "r": 40,
    "g": 80,
    "b": 155
  },
  "hsl": {
    "h": 219.13,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4449,
    "c": 0.13067,
    "h": 261.6
  },
  "luminance": 0.08555
}

Semantic roles & 50–950 ramp

primary

#28509B

secondary

#BD9D61

accent

#AC46E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #28509B

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

Preview Lab → · Contrast checker → · Palette generator →