#21121F
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.034 331.5), rgb(33, 18, 31).
Aa
White text reads best on this color (17.93:1).
About this color
#21121F is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.034 and its hue 332°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.046 away. White text reads best on it, at 17.93:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.93:1 |
Values
| HEX | #21121F |
| RGB | rgb(33, 18, 31) |
| HSL | hsl(308, 29%, 10%) |
| OKLCH | oklch(20.9% 0.034 331.5) |
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 #21121F | 17.93:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #21121F | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #21121F text on white | 17.93:1 | AAA | Lc 104.6 | Preferred for body text |
| #21121F text on black | 1.17:1 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7ED
oklch(93.6% 0.012 334.1)
-
Step 200
200
#E2D4E0
oklch(88.5% 0.022 330.3)
-
Step 300
300
#D1B8CC
oklch(81% 0.039 332.7)
-
Step 400
400
#B992B3
oklch(70.7% 0.065 331.5)
-
Step 500
500
#A777A0
oklch(63.1% 0.082 331.7)
-
Step 600
600
#925F8B
oklch(55.6% 0.09 331.7)
-
Step 700
700
#7C4E76
oklch(49% 0.084 331.5)
-
Step 800
800
#654160
oklch(42.8% 0.068 331.7)
-
Step 900
900
#52374E
oklch(37.7% 0.052 331.9)
-
Step 950
950 (this color)
#21121F
oklch(20.9% 0.034 331.5)
#21121F 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) | #12161F | 0.032 |
| Deuteranopia (no green cones) | #15181F | 0.031 |
| Tritanopia (no blue cones) | #221317 | 0.018 |
| Achromatopsia (no color) | #171717 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21121F
#21121F
oklch(20.9% 0.034 331.5)
- #0B1C10
#0B1C10
oklch(20.7% 0.033 152.1)
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 #21121F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.046
- Dark #1B2431 ΔE 0.062
- Jet #212529 ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.066
- Rich Navy #001219 ΔE 0.066
- Midnight Purple #280137 ΔE 0.069
- Almost Black #070D0D ΔE 0.070
- Eggplant #380835 ΔE 0.072
Use #21121F 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.