#21164A
Closest named color: Dark Indigo (#1F0954). oklch(25% 0.092 287.5), rgb(33, 22, 74).
Aa
White text reads best on this color (16.42:1).
About this color
#21164A is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.092 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.032 away. White text reads best on it, at 16.42:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.27:1 |
| White text | 16.42:1 |
Values
| HEX | #21164A |
| RGB | rgb(33, 22, 74) |
| HSL | hsl(253, 54%, 19%) |
| OKLCH | oklch(25% 0.092 287.5) |
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 #21164A | 16.42:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #21164A | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #21164A text on white | 16.42:1 | AAA | Lc 103.1 | Preferred for body text |
| #21164A text on black | 1.27:1 | 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
#E8E7FE
oklch(93.6% 0.031 287.8)
-
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
#9C8DFF
oklch(70.6% 0.163 287.5)
-
Step 500
500
#876BFF
oklch(63.1% 0.211 287.5)
-
Step 600
600
#7447F5
oklch(55.5% 0.242 287.6)
-
Step 700
700
#6236D5
oklch(49% 0.225 287.6)
-
Step 800
800
#4F2FAC
oklch(42.6% 0.186 287.4)
-
Step 900
900
#412D88
oklch(37.7% 0.144 287.5)
-
Step 950
950 (this color)
#21164A
oklch(25% 0.092 287.5)
#21164A 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) | #00214C | 0.049 |
| Deuteranopia (no green cones) | #001E49 | 0.047 |
| Tritanopia (no blue cones) | #12222D | 0.075 |
| Achromatopsia (no color) | #1F1F1F | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21164A
#21164A
oklch(25% 0.092 287.5)
- #242300
#242300
oklch(24.9% 0.054 108.1)
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 #21164A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.032
- Dark Purple #35063E ΔE 0.057
- Navy Blue #001146 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.060
- Midnight Purple #280137 ΔE 0.061
- Deep Purple #36013F ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.065
- Eggplant #380835 ΔE 0.069
Use #21164A 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.