#21128A#21128A

#21128A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.6% C 0.180 H 274.4°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#21128A
RGB	rgb(33, 18, 138)
HSL	hsl(248, 77%, 31%)
HSV	hsv(248, 87%, 54%)
CMYK	cmyk(76.1%, 87%, 0%, 45.9%)
CIE-LAB	lab(18.32, 44.62, -62.06)
CIE-LCH	lch(18.32, 76.44, 305.72°)
OKLab	oklab(31.6% 0.0137 -0.1794)
OKLCH	oklch(31.6% 0.18 274.4)
XYZ	xyz(5.4294, 2.5904, 24.2537)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21128A #7B8A12

analogous

#123F8A #21128A #5D128A

triadic

#21128A #8A2112 #128A21

tetradic

#21128A #8A123F #7B8A12 #128A5D

square

#21128A #8A123F #7B8A12 #128A5D

split-complementary

#21128A #8A5D12 #3F8A12

monochromatic

#07041E #140B54 #21128A #2E19C0 #4832E4

Accessibility & contrast

On white

13.83

#21128A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#21128A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21128A

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21128A	#FFFFFF	#000000	##FFFFFF
##21128A	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003A51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #21128a;
/* rgb */ color: rgb(33, 18, 138);
/* oklch */ color: oklch(31.6% 0.180 274.4);

Tailwind

colors: {
  custom: {
    50: '#7055ae',
    500: '#21128a',
    950: '#000000',
  },
}

SCSS

$custom: #21128a;
$custom-light: #7055ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21128a",
  "rgb": {
    "r": 33,
    "g": 18,
    "b": 138
  },
  "hsl": {
    "h": 247.5,
    "s": 76.923,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31596,
    "c": 0.17993,
    "h": 274.4
  },
  "luminance": 0.02591
}

Semantic roles & 50–950 ramp

primary

#21128A

secondary

#AEBF39

accent

#F334DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #21128A

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

Preview Lab → · Contrast checker → · Palette generator →