#2821AC#2821AC

#2821AC is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.7% C 0.207 H 272.6°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#2821AC
RGB	rgb(40, 33, 172)
HSL	hsl(243, 68%, 40%)
HSV	hsv(243, 81%, 67%)
CMYK	cmyk(76.7%, 80.8%, 0%, 32.5%)
CIE-LAB	lab(25.31, 48.67, -71.33)
CIE-LCH	lch(25.31, 86.35, 304.31°)
OKLab	oklab(37.74% 0.0093 -0.2064)
OKLCH	oklch(37.74% 0.207 272.6)
XYZ	xyz(8.8628, 4.5164, 39.4264)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2821AC #A5AC21

analogous

#215FAC #2821AC #6E21AC

triadic

#2821AC #AC2821 #21AC28

tetradic

#2821AC #AC215F #A5AC21 #21AC6E

square

#2821AC #AC215F #A5AC21 #21AC6E

split-complementary

#2821AC #AC6E21 #5FAC21

monochromatic

#100D45 #1C1779 #2821AC #3B32D8 #6C66E2

Accessibility & contrast

On white

11.03

#2821AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2821AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2821AC

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2821AC	#FFFFFF	#000000	##FFFFFF
##2821AC	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B0

Deuteranopia (green-blind)

#0035AA

Tritanopia (blue-blind)

#004D67

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2821ac;
/* rgb */ color: rgb(40, 33, 172);
/* oklch */ color: oklch(37.7% 0.207 272.6);

Tailwind

colors: {
  custom: {
    50: '#7a60c6',
    500: '#2821ac',
    950: '#000000',
  },
}

SCSS

$custom: #2821ac;
$custom-light: #7a60c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2821ac",
  "rgb": {
    "r": 40,
    "g": 33,
    "b": 172
  },
  "hsl": {
    "h": 243.022,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.37744,
    "c": 0.2066,
    "h": 272.6
  },
  "luminance": 0.04517
}

Semantic roles & 50–950 ramp

primary

#2821AC

secondary

#C2C762

accent

#EB3DE2

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2821AC

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

Preview Lab → · Contrast checker → · Palette generator →