#21153F
Closest named color: Dark Indigo (#1F0954). oklch(23.8% 0.077 292.8), rgb(33, 21, 63).
Aa
White text reads best on this color (16.88:1).
About this color
#21153F is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.077 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.046 away. White text reads best on it, at 16.88:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.24:1 |
| White text | 16.88:1 |
Values
| HEX | #21153F |
| RGB | rgb(33, 21, 63) |
| HSL | hsl(257, 50%, 16%) |
| OKLCH | oklch(23.8% 0.077 292.8) |
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 #21153F | 16.88:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #21153F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #21153F text on white | 16.88:1 | AAA | Lc 103.6 | Preferred for body text |
| #21153F text on black | 1.24:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#DAD4F8
oklch(88.6% 0.049 293)
-
Step 300
300
#C2B6F7
oklch(80.9% 0.091 292.7)
-
Step 400
400
#A48DF2
oklch(70.6% 0.145 292.8)
-
Step 500
500
#906DEE
oklch(63.1% 0.186 292.8)
-
Step 600
600
#7C51DC
oklch(55.6% 0.202 292.9)
-
Step 700
700
#6940BF
oklch(49.1% 0.188 293)
-
Step 800
800
#55369A
oklch(42.6% 0.155 292.9)
-
Step 900
900
#46307B
oklch(37.7% 0.122 293.2)
-
Step 950
950 (this color)
#21153F
oklch(23.8% 0.077 292.8)
#21153F 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) | #001D40 | 0.050 |
| Deuteranopia (no green cones) | #021C3E | 0.048 |
| Tritanopia (no blue cones) | #191E27 | 0.061 |
| Achromatopsia (no color) | #1D1D1D | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21153F
#21153F
oklch(23.8% 0.077 292.8)
- #1F2100
#1F2100
oklch(23.8% 0.053 113)
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 #21153F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.046
- Midnight Purple #280137 ΔE 0.050
- Dark Purple #35063E ΔE 0.052
- Very Dark Purple #2A0134 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.055
- Deep Purple #36013F ΔE 0.059
- Rich Black #0D1B2A ΔE 0.059
- Eggplant #380835 ΔE 0.059
Use #21153F 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.