#2121AA#2121AA

#2121AA is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.1% C 0.206 H 270.4°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#2121AA
RGB	rgb(33, 33, 170)
HSL	hsl(240, 67%, 40%)
HSV	hsv(240, 81%, 67%)
CMYK	cmyk(80.6%, 80.6%, 0%, 33.3%)
CIE-LAB	lab(24.68, 47.59, -71.18)
CIE-LCH	lch(24.68, 85.63, 303.77°)
OKLab	oklab(37.13% 0.0016 -0.2061)
OKLCH	oklch(37.13% 0.206 270.4)
XYZ	xyz(8.4243, 4.3124, 38.4108)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2121AA #AAAA21

analogous

#2166AA #2121AA #6621AA

triadic

#2121AA #AA2121 #21AA21

tetradic

#2121AA #AA2166 #AAAA21 #21AA66

square

#2121AA #AA2166 #AAAA21 #21AA66

split-complementary

#2121AA #AA6621 #66AA21

monochromatic

#0D0D43 #171777 #2121AA #3131D7 #6464E1

Accessibility & contrast

On white

11.27

#2121AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2121AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2121AA

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2121AA	#FFFFFF	#000000	##FFFFFF
##2121AA	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AE

Deuteranopia (green-blind)

#0033A8

Tritanopia (blue-blind)

#004C66

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2121aa;
/* rgb */ color: rgb(33, 33, 170);
/* oklch */ color: oklch(37.1% 0.206 270.4);

Tailwind

colors: {
  custom: {
    50: '#7760c5',
    500: '#2121aa',
    950: '#000000',
  },
}

SCSS

$custom: #2121aa;
$custom-light: #7760c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2121aa",
  "rgb": {
    "r": 33,
    "g": 33,
    "b": 170
  },
  "hsl": {
    "h": 240,
    "s": 67.488,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37129,
    "c": 0.20611,
    "h": 270.4
  },
  "luminance": 0.04313
}

Semantic roles & 50–950 ramp

primary

#2121AA

secondary

#C6C661

accent

#EA3DEA

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2121AA

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

Preview Lab → · Contrast checker → · Palette generator →