#28379B#28379B

#28379B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.162 H 270.3°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#28379B
RGB	rgb(40, 55, 155)
HSL	hsl(232, 59%, 38%)
HSV	hsv(232, 74%, 61%)
CMYK	cmyk(74.2%, 64.5%, 0%, 39.2%)
CIE-LAB	lab(28.25, 29.82, -56.19)
CIE-LCH	lch(28.25, 63.62, 297.95°)
OKLab	oklab(39.32% 0.0009 -0.1624)
OKLCH	oklch(39.32% 0.162 270.3)
XYZ	xyz(8.1556, 5.5492, 31.6453)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28379B #9B8C28

analogous

#28709B #28379B #52289B

triadic

#28379B #9B2837 #379B28

tetradic

#28379B #9B2870 #9B8C28 #289B52

square

#28379B #9B2870 #9B8C28 #289B52

split-complementary

#28379B #9B5228 #709B28

monochromatic

#0F143A #1B266A #28379B #3549CB #6675D7

Accessibility & contrast

On white

9.95

#28379B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#28379B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28379B

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28379B	#FFFFFF	#000000	##FFFFFF
##28379B	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489E

Deuteranopia (green-blind)

#003D99

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #28379b;
/* rgb */ color: rgb(40, 55, 155);
/* oklch */ color: oklch(39.3% 0.162 270.3);

Tailwind

colors: {
  custom: {
    50: '#736db9',
    500: '#28379b',
    950: '#000000',
  },
}

SCSS

$custom: #28379b;
$custom-light: #736db9;
$custom-dark: #000000;

JSON

{
  "hex": "#28379b",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 155
  },
  "hsl": {
    "h": 232.174,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.39325,
    "c": 0.16239,
    "h": 270.3
  },
  "luminance": 0.0555
}

Semantic roles & 50–950 ramp

primary

#28379B

secondary

#BDB161

accent

#CE46E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28379B

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

Preview Lab → · Contrast checker → · Palette generator →