#21153C
Closest named color: Midnight Purple (#280137). oklch(23.5% 0.072 294.4), rgb(33, 21, 60).
Aa
White text reads best on this color (16.97:1).
About this color
#21153C is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.072 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.049 away. White text reads best on it, at 16.97:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #21153C |
| RGB | rgb(33, 21, 60) |
| HSL | hsl(258, 48%, 16%) |
| OKLCH | oklch(23.5% 0.072 294.4) |
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 #21153C | 16.97:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #21153C | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #21153C text on white | 16.97:1 | AAA | Lc 103.7 | Preferred for body text |
| #21153C text on black | 1.23:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C3B6F3
oklch(80.8% 0.086 294.2)
-
Step 400
400
#A68EED
oklch(70.7% 0.137 294.2)
-
Step 500
500
#926FE7
oklch(63.1% 0.175 294.3)
-
Step 600
600
#7D53D5
oklch(55.5% 0.191 294.2)
-
Step 700
700
#6A43B8
oklch(49.1% 0.176 294.3)
-
Step 800
800
#563895
oklch(42.7% 0.146 294.2)
-
Step 900
900
#473277
oklch(37.8% 0.113 294.4)
-
Step 950
950 (this color)
#21153C
oklch(23.5% 0.072 294.4)
#21153C 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) | #031D3D | 0.048 |
| Deuteranopia (no green cones) | #061C3B | 0.045 |
| Tritanopia (no blue cones) | #1A1D26 | 0.056 |
| Achromatopsia (no color) | #1C1C1C | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21153C
#21153C
oklch(23.5% 0.072 294.4)
- #1E2100
#1E2100
oklch(23.7% 0.053 114.6)
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 #21153C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.049
- Very Dark Purple #2A0134 ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.052
- Dark Purple #35063E ΔE 0.052
- Oxford Blue #1B263B ΔE 0.054
- Rich Black #0D1B2A ΔE 0.055
- Dark #1B2431 ΔE 0.057
- Eggplant #380835 ΔE 0.058
Use #21153C 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.