#2728B2#2728B2

#2728B2 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.2% C 0.208 H 271.2°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#2728B2
RGB	rgb(39, 40, 178)
HSL	hsl(240, 64%, 43%)
HSV	hsv(240, 78%, 70%)
CMYK	cmyk(78.1%, 77.5%, 0%, 30.2%)
CIE-LAB	lab(27.19, 46.91, -71.81)
CIE-LCH	lch(27.19, 85.77, 303.16°)
OKLab	oklab(39.25% 0.0045 -0.2079)
OKLCH	oklch(39.25% 0.208 271.2)
XYZ	xyz(9.6287, 5.1622, 42.5998)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2728B2 #B2B127

analogous

#276EB2 #2728B2 #6B27B2

triadic

#2728B2 #B22728 #28B227

tetradic

#2728B2 #B2276E #B2B127 #27B26B

square

#2728B2 #B2276E #B2B127 #27B26B

split-complementary

#2728B2 #B26B27 #6EB227

monochromatic

#11114E #1C1D80 #2728B2 #4142D5 #7374E0

Accessibility & contrast

On white

10.33

#2728B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#2728B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2728B2

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2728B2	#FFFFFF	#000000	##FFFFFF
##2728B2	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B6

Deuteranopia (green-blind)

#0039B0

Tritanopia (blue-blind)

#00526C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2728b2;
/* rgb */ color: rgb(39, 40, 178);
/* oklch */ color: oklch(39.2% 0.208 271.2);

Tailwind

colors: {
  custom: {
    50: '#7a64ca',
    500: '#2728b2',
    950: '#000000',
  },
}

SCSS

$custom: #2728b2;
$custom-light: #7a64ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2728b2",
  "rgb": {
    "r": 39,
    "g": 40,
    "b": 178
  },
  "hsl": {
    "h": 239.568,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39246,
    "c": 0.20796,
    "h": 271.2
  },
  "luminance": 0.05163
}

Semantic roles & 50–950 ramp

primary

#2728B2

secondary

#C8C76D

accent

#E641E7

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2728B2

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

Preview Lab → · Contrast checker → · Palette generator →