#180A22
Closest named color: Rich Black (#0D1B2A). oklch(18% 0.05 309.1), rgb(24, 10, 34).
Aa
White text reads best on this color (18.99:1).
About this color
#180A22 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.050 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.058 away. White text reads best on it, at 18.99:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.10:1 |
| White text | 18.99:1 |
Values
| HEX | #180A22 |
| RGB | rgb(24, 10, 34) |
| HSL | hsl(275, 55%, 9%) |
| OKLCH | oklch(18% 0.05 309.1) |
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 #180A22 | 18.99:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #180A22 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #180A22 text on white | 18.99:1 | AAA | Lc 105.3 | Preferred for body text |
| #180A22 text on black | 1.10:1 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EA
oklch(88.5% 0.032 308.1)
-
Step 300
300
#CCB7DE
oklch(81% 0.059 309.3)
-
Step 400
400
#B290CE
oklch(70.7% 0.096 309.1)
-
Step 500
500
#9F74C1
oklch(63.2% 0.121 309)
-
Step 600
600
#8A5BAD
oklch(55.6% 0.132 309.2)
-
Step 700
700
#754A95
oklch(49.1% 0.124 309)
-
Step 800
800
#5F3D79
oklch(42.6% 0.103 308.8)
-
Step 900
900
#4E3561
oklch(37.7% 0.078 309.2)
-
Step 950
950 (this color)
#180A22
oklch(18% 0.05 309.1)
#180A22 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) | #041023 | 0.042 |
| Deuteranopia (no green cones) | #081021 | 0.036 |
| Tritanopia (no blue cones) | #170E14 | 0.035 |
| Achromatopsia (no color) | #101010 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180A22
#180A22
oklch(18% 0.05 309.1)
- #0B1500
#0B1500
oklch(17.9% 0.047 128.4)
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 #180A22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.058
- Rich Navy #001219 ΔE 0.059
- Midnight Purple #280137 ΔE 0.059
- Almost Black #070D0D ΔE 0.061
- Midnight #03012D ΔE 0.069
- Dark Navy #000435 ΔE 0.073
- Dark Navy Blue #00022E ΔE 0.074
Use #180A22 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.