#2121A9#2121A9

#2121A9 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.0% C 0.205 H 270.5°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#2121A9
RGB	rgb(33, 33, 169)
HSL	hsl(240, 67%, 40%)
HSV	hsv(240, 80%, 66%)
CMYK	cmyk(80.5%, 80.5%, 0%, 33.7%)
CIE-LAB	lab(24.56, 47.27, -70.78)
CIE-LCH	lch(24.56, 85.11, 303.74°)
OKLab	oklab(37.01% 0.0018 -0.2049)
OKLCH	oklch(37.01% 0.205 270.5)
XYZ	xyz(8.3301, 4.2747, 37.9145)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2121A9 #A9A921

analogous

#2165A9 #2121A9 #6521A9

triadic

#2121A9 #A92121 #21A921

tetradic

#2121A9 #A92165 #A9A921 #21A965

square

#2121A9 #A92165 #A9A921 #21A965

split-complementary

#2121A9 #A96521 #65A921

monochromatic

#0D0D43 #171776 #2121A9 #3131D7 #6464E1

Accessibility & contrast

On white

11.32

#2121A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2121A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2121A9

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2121A9	#FFFFFF	#000000	##FFFFFF
##2121A9	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AD

Deuteranopia (green-blind)

#0033A7

Tritanopia (blue-blind)

#004C65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2121a9;
/* rgb */ color: rgb(33, 33, 169);
/* oklch */ color: oklch(37.0% 0.205 270.5);

Tailwind

colors: {
  custom: {
    50: '#7760c4',
    500: '#2121a9',
    950: '#000000',
  },
}

SCSS

$custom: #2121a9;
$custom-light: #7760c4;
$custom-dark: #000000;

JSON

{
  "hex": "#2121a9",
  "rgb": {
    "r": 33,
    "g": 33,
    "b": 169
  },
  "hsl": {
    "h": 240,
    "s": 67.327,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37011,
    "c": 0.20493,
    "h": 270.5
  },
  "luminance": 0.04276
}

Semantic roles & 50–950 ramp

primary

#2121A9

secondary

#C6C660

accent

#EA3EEA

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2121A9

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

Preview Lab → · Contrast checker → · Palette generator →