#2728B0#2728B0

#2728B0 is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.0% C 0.206 H 271.4°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#2728B0
RGB	rgb(39, 40, 176)
HSL	hsl(240, 64%, 42%)
HSV	hsv(240, 78%, 69%)
CMYK	cmyk(77.8%, 77.3%, 0%, 31%)
CIE-LAB	lab(26.97, 46.26, -70.98)
CIE-LCH	lch(26.97, 84.72, 303.09°)
OKLab	oklab(39.02% 0.0049 -0.2055)
OKLCH	oklch(39.02% 0.206 271.4)
XYZ	xyz(9.4293, 5.0825, 41.5499)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2728B0 #B0AF27

analogous

#276DB0 #2728B0 #6B27B0

triadic

#2728B0 #B02728 #28B027

tetradic

#2728B0 #B0276D #B0AF27 #27B06B

square

#2728B0 #B0276D #B0AF27 #27B06B

split-complementary

#2728B0 #B06B27 #6DB027

monochromatic

#11114C #1C1D7E #2728B0 #4041D5 #7273E0

Accessibility & contrast

On white

10.41

#2728B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#2728B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2728B0

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2728B0	#FFFFFF	#000000	##FFFFFF
##2728B0	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B4

Deuteranopia (green-blind)

#0039AE

Tritanopia (blue-blind)

#00516B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2728b0;
/* rgb */ color: rgb(39, 40, 176);
/* oklch */ color: oklch(39.0% 0.206 271.4);

Tailwind

colors: {
  custom: {
    50: '#7a64c9',
    500: '#2728b0',
    950: '#000000',
  },
}

SCSS

$custom: #2728b0;
$custom-light: #7a64c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2728b0",
  "rgb": {
    "r": 39,
    "g": 40,
    "b": 176
  },
  "hsl": {
    "h": 239.562,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.39023,
    "c": 0.20557,
    "h": 271.4
  },
  "luminance": 0.05084
}

Semantic roles & 50–950 ramp

primary

#2728B0

secondary

#C7C66C

accent

#E641E7

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2728B0

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

Preview Lab → · Contrast checker → · Palette generator →