#2F28B5#2F28B5

#2F28B5 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.0% C 0.209 H 273.7°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#2F28B5
RGB	rgb(47, 40, 181)
HSL	hsl(243, 64%, 43%)
HSV	hsv(243, 78%, 71%)
CMYK	cmyk(74%, 77.9%, 0%, 29%)
CIE-LAB	lab(28.00, 48.49, -72.25)
CIE-LCH	lch(28.00, 87.01, 303.87°)
OKLab	oklab(40.04% 0.0133 -0.209)
OKLCH	oklch(40.04% 0.209 273.7)
XYZ	xyz(10.2688, 5.4571, 44.2192)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F28B5 #AEB528

analogous

#2867B5 #2F28B5 #7528B5

triadic

#2F28B5 #B52F28 #28B52F

tetradic

#2F28B5 #B52867 #AEB528 #28B575

square

#2F28B5 #B52867 #AEB528 #28B575

split-complementary

#2F28B5 #B57528 #67B528

monochromatic

#151251 #221D83 #2F28B5 #4C44D6 #7C77E1

Accessibility & contrast

On white

10.04

#2F28B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2F28B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F28B5

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F28B5	#FFFFFF	#000000	##FFFFFF
##2F28B5	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B9

Deuteranopia (green-blind)

#003BB3

Tritanopia (blue-blind)

#00536E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2f28b5;
/* rgb */ color: rgb(47, 40, 181);
/* oklch */ color: oklch(40.0% 0.209 273.7);

Tailwind

colors: {
  custom: {
    50: '#7e65cd',
    500: '#2f28b5',
    950: '#000000',
  },
}

SCSS

$custom: #2f28b5;
$custom-light: #7e65cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2f28b5",
  "rgb": {
    "r": 47,
    "g": 40,
    "b": 181
  },
  "hsl": {
    "h": 242.979,
    "s": 63.801,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40037,
    "c": 0.20945,
    "h": 273.7
  },
  "luminance": 0.05458
}

Semantic roles & 50–950 ramp

primary

#2F28B5

secondary

#C4C870

accent

#E741DF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #2F28B5

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

Preview Lab → · Contrast checker → · Palette generator →