#180C20
Closest named color: Rich Black (#0D1B2A). oklch(18.2% 0.043 310.5), rgb(24, 12, 32).
Aa
White text reads best on this color (18.88:1).
About this color
#180C20 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.043 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.053 away. White text reads best on it, at 18.88:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.11:1 |
| White text | 18.88:1 |
Values
| HEX | #180C20 |
| RGB | rgb(24, 12, 32) |
| HSL | hsl(276, 45%, 9%) |
| OKLCH | oklch(18.2% 0.043 310.5) |
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 #180C20 | 18.88:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #180C20 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #180C20 text on white | 18.88:1 | AAA | Lc 105.3 | Preferred for body text |
| #180C20 text on black | 1.11:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E7
oklch(88.4% 0.028 311.3)
-
Step 300
300
#CBB8D9
oklch(80.9% 0.05 310.9)
-
Step 400
400
#B093C7
oklch(70.8% 0.081 309.7)
-
Step 500
500
#9D77B8
oklch(63.1% 0.104 310.4)
-
Step 600
600
#885FA4
oklch(55.6% 0.113 310.5)
-
Step 700
700
#734E8C
oklch(49% 0.104 310.5)
-
Step 800
800
#5E4072
oklch(42.7% 0.087 310.7)
-
Step 900
900
#4D375C
oklch(37.8% 0.067 310.7)
-
Step 950
950 (this color)
#180C20
oklch(18.2% 0.043 310.5)
#180C20 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) | #081021 | 0.033 |
| Deuteranopia (no green cones) | #0B111F | 0.030 |
| Tritanopia (no blue cones) | #170F14 | 0.030 |
| Achromatopsia (no color) | #111111 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180C20
#180C20
oklch(18.2% 0.043 310.5)
- #0B1602
#0B1602
oklch(18.3% 0.044 131.3)
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 #180C20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.053
- Rich Navy #001219 ΔE 0.054
- Almost Black #070D0D ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.063
- Midnight Purple #280137 ΔE 0.064
- Very Dark Brown #1D0200 ΔE 0.072
- Midnight #03012D ΔE 0.074
- Dark Navy #000435 ΔE 0.076
Use #180C20 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.