#28389B#28389B

#28389B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.5% C 0.161 H 270.1°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#28389B
RGB	rgb(40, 56, 155)
HSL	hsl(232, 59%, 38%)
HSV	hsv(232, 74%, 61%)
CMYK	cmyk(74.2%, 63.9%, 0%, 39.2%)
CIE-LAB	lab(28.50, 29.16, -55.78)
CIE-LCH	lch(28.50, 62.94, 297.60°)
OKLab	oklab(39.51% 0.0002 -0.1612)
OKLCH	oklch(39.51% 0.161 270.1)
XYZ	xyz(8.2036, 5.6452, 31.6613)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28389B #9B8B28

analogous

#28719B #28389B #51289B

triadic

#28389B #9B2838 #389B28

tetradic

#28389B #9B2871 #9B8B28 #289B51

square

#28389B #9B2871 #9B8B28 #289B51

split-complementary

#28389B #9B5128 #719B28

monochromatic

#0F153A #1B266A #28389B #354ACB #6676D7

Accessibility & contrast

On white

9.86

#28389B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#28389B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28389B

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28389B	#FFFFFF	#000000	##FFFFFF
##28389B	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#003E99

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #28389b;
/* rgb */ color: rgb(40, 56, 155);
/* oklch */ color: oklch(39.5% 0.161 270.1);

Tailwind

colors: {
  custom: {
    50: '#736eb9',
    500: '#28389b',
    950: '#000000',
  },
}

SCSS

$custom: #28389b;
$custom-light: #736eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#28389b",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 155
  },
  "hsl": {
    "h": 231.652,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.39511,
    "c": 0.16116,
    "h": 270.1
  },
  "luminance": 0.05646
}

Semantic roles & 50–950 ramp

primary

#28389B

secondary

#BDB161

accent

#CC46E2

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28389B

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

Preview Lab → · Contrast checker → · Palette generator →