#21003B Deep Purple

What are the RGB, HSL, OKLCH and CMYK values of #21003B?

HEX

#21003B

RGB

rgb(33, 0, 59)

HSL

hsl(274, 100%, 12%)

OKLCH

oklch(20.0% 0.105 304)

CMYK

44, 100, 0, 77

#21003B has a contrast ratio of 18.62:1 against white and 1.13:1 against black, so white is the better background for text in this color and light text reads best on it.

Contrast checker

Text color (rows) on background (columns), scored against WCAG 2.2. White and near-black text on this color.

AAA ≥ 7:1 · AA ≥ 4.5:1 body text· AA18 ≥ 3:1 large text (18pt, or 14pt bold) only

Tints and shades of #21003B

Same hue and chroma in OKLCH, lighter to darker.

1. #F7F2FF
2. #E0CAFF
3. #C5A6ED
4. #A688CD
5. #896BAE
6. #6D5090
7. #523573
8. #391A56
9. #21003B

Colors that go with #21003B

Six harmony rules built from this color. Open any in the Studio.

• AnalogousNeighboring hues. Calm and cohesive, with little tension.
• ComplementaryOpposite hues. Maximum contrast — strong for accents.
• SplitA hue plus the two neighbors of its opposite. Contrast without the clash.
• TriadicThree evenly spaced hues. Vivid and balanced.
• TetradicFour hues in two complementary pairs. Rich, and easy to overuse.
• MonoOne hue across a range of lightness. Always harmonious.

Color blindness check

About 1 in 12 men and 1 in 200 women see color differently. Simulated with the Machado (2009) model.

No green cones — the most common form. Deep Purple, #21003B and Midnight Blue, #05005C; Byzantium, #64005E and Oxford Blue, #00285C; Midnight Blue, #05005C and Oxford Blue, #00285C become hard to tell apart — don't rely on color alone to separate them.

Palettes, gradients and meshes with #21003B

Items using this color or one perceptually close to it, closest first.