#180817
Closest named color: Almost Black (#070D0D). oklch(16.7% 0.039 329.5), rgb(24, 8, 23).
Aa
White text reads best on this color (19.33:1).
About this color
#180817 is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.039 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.049 away. White text reads best on it, at 19.33:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.039) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.08:1 |
| White text | 19.33:1 |
Values
| HEX | #180817 |
| RGB | rgb(24, 8, 23) |
| HSL | hsl(304, 50%, 6%) |
| OKLCH | oklch(16.7% 0.039 329.5) |
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 #180817 | 19.33:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #180817 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #180817 text on white | 19.33:1 | AAA | Lc 105.5 | Preferred for body text |
| #180817 text on black | 1.08:1 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7EE
oklch(93.6% 0.013 329.6)
-
Step 200
200
#E3D3E1
oklch(88.4% 0.026 329.8)
-
Step 300
300
#D2B6CF
oklch(80.8% 0.046 329.5)
-
Step 400
400
#BB90B7
oklch(70.6% 0.074 329.4)
-
Step 500
500
#AA74A5
oklch(63.1% 0.095 329.9)
-
Step 600
600
#955C91
oklch(55.7% 0.104 329.4)
-
Step 700
700
#7F4B7B
oklch(49.1% 0.097 329.7)
-
Step 800
800
#673E64
oklch(42.7% 0.08 329.5)
-
Step 900
900
#543552
oklch(37.7% 0.063 329)
-
Step 950
950 (this color)
#180817
oklch(16.7% 0.039 329.5)
#180817 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) | #070C18 | 0.039 |
| Deuteranopia (no green cones) | #0B0F17 | 0.036 |
| Tritanopia (no blue cones) | #19090E | 0.021 |
| Achromatopsia (no color) | #0E0E0E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180817
#180817
oklch(16.7% 0.039 329.5)
- #021306
#021306
oklch(16.6% 0.038 151)
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 #180817, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.049
- Very Dark Brown #1D0200 ΔE 0.054
- Rich Navy #001219 ΔE 0.057
- Rich Black #0D1B2A ΔE 0.069
- Very Dark Purple #2A0134 ΔE 0.074
- Midnight Purple #280137 ΔE 0.076
- Midnight #03012D ΔE 0.080
- Dark Navy Blue #00022E ΔE 0.085
Use #180817 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.