#28439B#28439B

#28439B is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.147 H 266.9°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#28439B
RGB	rgb(40, 67, 155)
HSL	hsl(226, 59%, 38%)
HSV	hsv(226, 74%, 61%)
CMYK	cmyk(74.2%, 56.8%, 0%, 39.2%)
CIE-LAB	lab(31.42, 21.77, -51.02)
CIE-LCH	lch(31.42, 55.47, 293.11°)
OKLab	oklab(41.69% -0.008 -0.147)
OKLCH	oklch(41.69% 0.147 266.9)
XYZ	xyz(8.7966, 6.8311, 31.8589)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28439B #9B8028

analogous

#287C9B #28439B #46289B

triadic

#28439B #9B2843 #439B28

tetradic

#28439B #9B287C #9B8028 #289B46

square

#28439B #9B287C #9B8028 #289B46

split-complementary

#28439B #9B4628 #7C9B28

monochromatic

#0F193A #1B2E6A #28439B #3558CB #6681D7

Accessibility & contrast

On white

8.87

#28439B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#28439B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28439B

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28439B	#FFFFFF	#000000	##FFFFFF
##28439B	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9E

Deuteranopia (green-blind)

#004599

Tritanopia (blue-blind)

#005968

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #28439b;
/* rgb */ color: rgb(40, 67, 155);
/* oklch */ color: oklch(41.7% 0.147 266.9);

Tailwind

colors: {
  custom: {
    50: '#7276b9',
    500: '#28439b',
    950: '#000000',
  },
}

SCSS

$custom: #28439b;
$custom-light: #7276b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28439b",
  "rgb": {
    "r": 40,
    "g": 67,
    "b": 155
  },
  "hsl": {
    "h": 225.913,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41685,
    "c": 0.14726,
    "h": 266.9
  },
  "luminance": 0.06832
}

Semantic roles & 50–950 ramp

primary

#28439B

secondary

#BDA861

accent

#BD46E2

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #28439B

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

Preview Lab → · Contrast checker → · Palette generator →