#21102A
Closest named color: Very Dark Purple (#2A0134). oklch(21.1% 0.054 312.8), rgb(33, 16, 42).
Aa
White text reads best on this color (17.91:1).
About this color
#21102A is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.054 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Very Dark Purple (#2A0134), ΔE 0.045 away. White text reads best on it, at 17.91:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Very Dark Purple (#2A0134) |
| Black text | 1.17:1 |
| White text | 17.91:1 |
Values
| HEX | #21102A |
| RGB | rgb(33, 16, 42) |
| HSL | hsl(279, 45%, 11%) |
| OKLCH | oklch(21.1% 0.054 312.8) |
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 #21102A | 17.91:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #21102A | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #21102A text on white | 17.91:1 | AAA | Lc 104.6 | Preferred for body text |
| #21102A 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EEE6F3
oklch(93.5% 0.019 312.8)
-
Step 200
200
#E1D3EA
oklch(88.5% 0.035 312.4)
-
Step 300
300
#CFB5DF
oklch(80.9% 0.065 312.5)
-
Step 400
400
#B78ECE
oklch(70.8% 0.101 313)
-
Step 500
500
#A570C2
oklch(63.2% 0.132 312.8)
-
Step 600
600
#9057AE
oklch(55.7% 0.142 312.9)
-
Step 700
700
#7A4695
oklch(49% 0.132 312.9)
-
Step 800
800
#633A79
oklch(42.6% 0.11 312.6)
-
Step 900
900
#513362
oklch(37.8% 0.085 312.3)
-
Step 950
950 (this color)
#21102A
oklch(21.1% 0.054 312.8)
#21102A 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) | #0A162B | 0.045 |
| Deuteranopia (no green cones) | #0F1729 | 0.040 |
| Tritanopia (no blue cones) | #20141B | 0.036 |
| Achromatopsia (no color) | #171717 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21102A
#21102A
oklch(21.1% 0.054 312.8)
- #0E1D02
#0E1D02
oklch(20.9% 0.054 132.7)
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 #21102A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Purple #2A0134 ΔE 0.045
- Midnight Purple #280137 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.049
- Eggplant #380835 ΔE 0.058
- Dark Purple #35063E ΔE 0.062
- Dark #1B2431 ΔE 0.065
- Deep Purple #36013F ΔE 0.068
- Aubergine #3D0734 ΔE 0.068
Use #21102A 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.