#21051B
Closest named color: Very Dark Purple (#2A0134). oklch(18% 0.06 337), rgb(33, 5, 27).
Aa
White text reads best on this color (19.05:1).
About this color
#21051B is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.060 and its hue 337°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Purple (#2A0134), ΔE 0.055 away. White text reads best on it, at 19.05:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Very Dark Purple (#2A0134) |
| Black text | 1.10:1 |
| White text | 19.05:1 |
Values
| HEX | #21051B |
| RGB | rgb(33, 5, 27) |
| HSL | hsl(313, 74%, 7%) |
| OKLCH | oklch(18% 0.06 337) |
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 #21051B | 19.05:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #21051B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #21051B text on white | 19.05:1 | AAA | Lc 105.2 | Preferred for body text |
| #21051B text on black | 1.10:1 | 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
#FAF3F8
oklch(97.1% 0.01 335.5)
-
Step 100
100
#F4E5EF
oklch(93.7% 0.021 337.7)
-
Step 200
200
#EBD0E3
oklch(88.6% 0.039 336.5)
-
Step 300
300
#DFAFD1
oklch(80.8% 0.071 337.1)
-
Step 400
400
#CE84BA
oklch(70.7% 0.114 337.3)
-
Step 500
500
#BF63A9
oklch(63% 0.146 337)
-
Step 600
600
#AA4894
oklch(55.6% 0.157 337.1)
-
Step 700
700
#92397E
oklch(49.1% 0.146 337.3)
-
Step 800
800
#773067
oklch(42.8% 0.122 337.1)
-
Step 900
900
#602B54
oklch(37.7% 0.095 336.7)
-
Step 950
950 (this color)
#21051B
oklch(18% 0.06 337)
#21051B 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) | #050D1C | 0.066 |
| Deuteranopia (no green cones) | #0E111A | 0.055 |
| Tritanopia (no blue cones) | #23060E | 0.029 |
| Achromatopsia (no color) | #101010 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21051B
#21051B
oklch(18% 0.06 337)
- #00170A
#00170A
oklch(18% 0.042 157.7)
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 #21051B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Purple #2A0134 ΔE 0.055
- Midnight Purple #280137 ΔE 0.059
- Very Dark Brown #1D0200 ΔE 0.062
- Almost Black #070D0D ΔE 0.074
- Eggplant #380835 ΔE 0.075
- Dark Maroon #3C0008 ΔE 0.077
- Rich Black #0D1B2A ΔE 0.077
- Rich Navy #001219 ΔE 0.079
Use #21051B 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.