#28539A#28539A

#28539A is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.1% C 0.126 H 259.9°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#28539A
RGB	rgb(40, 83, 154)
HSL	hsl(217, 59%, 38%)
HSV	hsv(217, 74%, 60%)
CMYK	cmyk(74%, 46.1%, 0%, 39.6%)
CIE-LAB	lab(35.93, 10.63, -43.14)
CIE-LCH	lch(35.93, 44.43, 283.84°)
OKLab	oklab(45.1% -0.022 -0.1236)
OKLCH	oklch(45.1% 0.126 259.9)
XYZ	xyz(9.7990, 8.9697, 31.7805)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28539A #9A6F28

analogous

#288C9A #28539A #36289A

triadic

#28539A #9A2853 #539A28

tetradic

#28539A #9A288C #9A6F28 #289A36

square

#28539A #9A288C #9A6F28 #289A36

split-complementary

#28539A #9A3628 #8C9A28

monochromatic

#0F1F39 #1B3969 #28539A #356DCA #6590D7

Accessibility & contrast

On white

7.52

#28539A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#28539A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28539A

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28539A	#FFFFFF	#000000	##FFFFFF
##28539A	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5A9D

Deuteranopia (green-blind)

#175099

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #28539a;
/* rgb */ color: rgb(40, 83, 154);
/* oklch */ color: oklch(45.1% 0.126 259.9);

Tailwind

colors: {
  custom: {
    50: '#7182b8',
    500: '#28539a',
    950: '#000000',
  },
}

SCSS

$custom: #28539a;
$custom-light: #7182b8;
$custom-dark: #000000;

JSON

{
  "hex": "#28539a",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 154
  },
  "hsl": {
    "h": 217.368,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.45096,
    "c": 0.12552,
    "h": 259.9
  },
  "luminance": 0.08971
}

Semantic roles & 50–950 ramp

primary

#28539A

secondary

#BD9A61

accent

#A746E2

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #28539A

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

Preview Lab → · Contrast checker → · Palette generator →