#21164B
Closest named color: Dark Indigo (#1F0954). oklch(25% 0.093 287.2), rgb(33, 22, 75).
Aa
White text reads best on this color (16.39:1).
About this color
#21164B is a dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.093 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.031 away. White text reads best on it, at 16.39:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.28:1 |
| White text | 16.39:1 |
Values
| HEX | #21164B |
| RGB | rgb(33, 22, 75) |
| HSL | hsl(252, 55%, 19%) |
| OKLCH | oklch(25% 0.093 287.2) |
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 #21164B | 16.39:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #21164B | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #21164B text on white | 16.39:1 | AAA | Lc 103.1 | Preferred for body text |
| #21164B text on black | 1.28:1 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D6D4FF
oklch(88.5% 0.059 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9C8EFF
oklch(70.8% 0.161 287.2)
-
Step 500
500
#866BFF
oklch(63% 0.211 287.1)
-
Step 600
600
#7346F7
oklch(55.5% 0.246 287.1)
-
Step 700
700
#6235D8
oklch(49.2% 0.229 287.3)
-
Step 800
800
#4F2EAE
oklch(42.6% 0.19 287.2)
-
Step 900
900
#412C8A
oklch(37.7% 0.148 287.3)
-
Step 950
950 (this color)
#21164B
oklch(25% 0.093 287.2)
#21164B 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) | #00214D | 0.048 |
| Deuteranopia (no green cones) | #001E4A | 0.047 |
| Tritanopia (no blue cones) | #12232E | 0.077 |
| Achromatopsia (no color) | #1F1F1F | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21164B
#21164B
oklch(25% 0.093 287.2)
- #252300
#252300
oklch(25% 0.054 106.5)
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 #21164B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.031
- Dark Purple #35063E ΔE 0.058
- Navy Blue #001146 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.061
- Midnight Purple #280137 ΔE 0.062
- Deep Purple #36013F ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.066
- Midnight Blue #191970 ΔE 0.069
Use #21164B 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.