#21091B
Closest named color: Very Dark Purple (#2A0134). oklch(18.8% 0.05 338), rgb(33, 9, 27).
Aa
White text reads best on this color (18.75:1).
About this color
#21091B is a very dark, muted purple. In OKLCH its lightness is 19%, its chroma 0.050 and its hue 338°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Purple (#2A0134), ΔE 0.058 away. White text reads best on it, at 18.75:1.
| Hue family | Purples |
| Lightness | very dark (19%) |
| Chroma | muted (0.050) |
| Temperature | warm |
| Nearest name | Very Dark Purple (#2A0134) |
| Black text | 1.11:1 |
| White text | 18.75:1 |
Values
| HEX | #21091B |
| RGB | rgb(33, 9, 27) |
| HSL | hsl(315, 57%, 8%) |
| OKLCH | oklch(18.8% 0.05 338) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #21091B | 18.75:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #21091B | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #21091B text on white | 18.75:1 | AAA | Lc 105.1 | Preferred for body text |
| #21091B text on black | 1.11:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F9F3F7
oklch(97% 0.008 337.4)
-
Step 100
100
#F2E6EE
oklch(93.7% 0.017 337.6)
-
Step 200
200
#E9D1E1
oklch(88.5% 0.034 338)
-
Step 300
300
#DBB2CE
oklch(80.8% 0.06 338)
-
Step 400
400
#C889B5
oklch(70.7% 0.096 338.3)
-
Step 500
500
#B86BA3
oklch(63.1% 0.121 337.9)
-
Step 600
600
#A3518E
oklch(55.6% 0.132 337.9)
-
Step 700
700
#8C4179
oklch(49.1% 0.124 338)
-
Step 800
800
#723662
oklch(42.7% 0.103 338.4)
-
Step 900
900
#5C3050
oklch(37.8% 0.078 338.2)
-
Step 950
950 (this color)
#21091B
oklch(18.8% 0.05 338)
#21091B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0A0F1C | 0.052 |
| Deuteranopia (no green cones) | #11131A | 0.046 |
| Tritanopia (no blue cones) | #230A10 | 0.024 |
| Achromatopsia (no color) | #121212 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21091B
#21091B
oklch(18.8% 0.05 338)
- #00190C
#00190C
oklch(18.8% 0.043 158.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #21091B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Purple #2A0134 ΔE 0.058
- Very Dark Brown #1D0200 ΔE 0.062
- Midnight Purple #280137 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.067
- Almost Black #070D0D ΔE 0.068
- Rich Navy #001219 ΔE 0.072
- Dark Maroon #3C0008 ΔE 0.073
- Eggplant #380835 ΔE 0.074
Use #21091B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.