#21152C
Closest named color: Rich Black (#0D1B2A). oklch(22.3% 0.046 307.1), rgb(33, 21, 44).
Aa
White text reads best on this color (17.37:1).
About this color
#21152C is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.046 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 17.37:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.37:1 |
Values
| HEX | #21152C |
| RGB | rgb(33, 21, 44) |
| HSL | hsl(271, 35%, 13%) |
| OKLCH | oklch(22.3% 0.046 307.1) |
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 #21152C | 17.37:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #21152C | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #21152C text on white | 17.37:1 | AAA | Lc 104.2 | Preferred for body text |
| #21152C text on black | 1.20:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#ECE7F2
oklch(93.5% 0.016 306.4)
-
Step 200
200
#DED4E9
oklch(88.4% 0.03 307.1)
-
Step 300
300
#CAB8DD
oklch(81% 0.055 307.1)
-
Step 400
400
#AF92CC
oklch(70.7% 0.089 307.1)
-
Step 500
500
#9B76BE
oklch(63% 0.112 307.1)
-
Step 600
600
#865EAA
oklch(55.5% 0.121 307.1)
-
Step 700
700
#724D92
oklch(49.1% 0.113 307.5)
-
Step 800
800
#5D4077
oklch(42.8% 0.094 307.2)
-
Step 900
900
#4C3660
oklch(37.7% 0.074 307.3)
-
Step 950
950 (this color)
#21152C
oklch(22.3% 0.046 307.1)
#21152C 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) | #101A2D | 0.034 |
| Deuteranopia (no green cones) | #131A2B | 0.030 |
| Tritanopia (no blue cones) | #1F191E | 0.035 |
| Achromatopsia (no color) | #1A1A1A | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21152C
#21152C
oklch(22.3% 0.046 307.1)
- #151F06
#151F06
oklch(22.3% 0.046 127.7)
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 #21152C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Dark #1B2431 ΔE 0.049
- Very Dark Purple #2A0134 ΔE 0.056
- Midnight Purple #280137 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.057
- Jet #212529 ΔE 0.057
- Eggplant #380835 ΔE 0.060
- Dark Purple #35063E ΔE 0.065
Use #21152C 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.