#18091B
Closest named color: Almost Black (#070D0D). oklch(17.2% 0.042 320.8), rgb(24, 9, 27).
Aa
White text reads best on this color (19.20:1).
About this color
#18091B is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.042 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.052 away. White text reads best on it, at 19.20:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.09:1 |
| White text | 19.20:1 |
Values
| HEX | #18091B |
| RGB | rgb(24, 9, 27) |
| HSL | hsl(290, 50%, 7%) |
| OKLCH | oklch(17.2% 0.042 320.8) |
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 #18091B | 19.20:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #18091B | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #18091B text on white | 19.20:1 | AAA | Lc 105.5 | Preferred for body text |
| #18091B text on black | 1.09:1 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#EEE7F0
oklch(93.6% 0.014 318.7)
-
Step 200
200
#E2D4E5
oklch(88.6% 0.027 320.3)
-
Step 300
300
#D0B7D5
oklch(81% 0.05 320.6)
-
Step 400
400
#B890BF
oklch(70.6% 0.081 321.3)
-
Step 500
500
#A574AF
oklch(63% 0.102 320.6)
-
Step 600
600
#905C9B
oklch(55.5% 0.111 320.4)
-
Step 700
700
#7B4C84
oklch(49.2% 0.102 321)
-
Step 800
800
#643E6B
oklch(42.6% 0.086 321.2)
-
Step 900
900
#523557
oklch(37.7% 0.067 321.5)
-
Step 950
950 (this color)
#18091B
oklch(17.2% 0.042 320.8)
#18091B 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) | #070E1C | 0.038 |
| Deuteranopia (no green cones) | #0B0F1A | 0.033 |
| Tritanopia (no blue cones) | #180B10 | 0.026 |
| Achromatopsia (no color) | #0F0F0F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18091B
#18091B
oklch(17.2% 0.042 320.8)
- #051403
#051403
oklch(17.1% 0.043 140.3)
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 #18091B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.052
- Rich Navy #001219 ΔE 0.056
- Very Dark Brown #1D0200 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.068
- Midnight Purple #280137 ΔE 0.070
- Midnight #03012D ΔE 0.075
- Dark Navy Blue #00022E ΔE 0.081
Use #18091B 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.