#180318
Closest named color: Very Dark Brown (#1D0200). oklch(15.5% 0.056 327.9), rgb(24, 3, 24).
Aa
White text reads best on this color (19.71:1).
About this color
#180318 is a very dark, muted purple. In OKLCH its lightness is 16%, its chroma 0.056 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.060 away. White text reads best on it, at 19.71:1.
| Hue family | Purples |
| Lightness | very dark (16%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.06:1 |
| White text | 19.71:1 |
Values
| HEX | #180318 |
| RGB | rgb(24, 3, 24) |
| HSL | hsl(300, 78%, 5%) |
| OKLCH | oklch(15.5% 0.056 327.9) |
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 #180318 | 19.71:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #180318 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #180318 text on white | 19.71:1 | AAA | Lc 105.6 | Preferred for body text |
| #180318 text on black | 1.06:1 | 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
#F9F3F8
oklch(97% 0.009 330.9)
-
Step 100
100
#F1E6F0
oklch(93.6% 0.018 328.5)
-
Step 200
200
#E7D1E6
oklch(88.5% 0.037 327.3)
-
Step 300
300
#D9B2D7
oklch(80.9% 0.067 327.8)
-
Step 400
400
#C489C2
oklch(70.7% 0.105 327.8)
-
Step 500
500
#B469B3
oklch(63% 0.136 327.5)
-
Step 600
600
#9F4F9E
oklch(55.5% 0.147 327.8)
-
Step 700
700
#884087
oklch(49.1% 0.135 327.9)
-
Step 800
800
#6F356E
oklch(42.7% 0.113 328)
-
Step 900
900
#5A2F59
oklch(37.8% 0.088 328)
-
Step 950
950 (this color)
#180318
oklch(15.5% 0.056 327.9)
#180318 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) | #020919 | 0.057 |
| Deuteranopia (no green cones) | #070C17 | 0.050 |
| Tritanopia (no blue cones) | #19050B | 0.032 |
| Achromatopsia (no color) | #0B0B0B | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180318
#180318
oklch(15.5% 0.056 327.9)
- #001103
#001103
oklch(15.5% 0.044 148.9)
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 #180318, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.060
- Almost Black #070D0D ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.070
- Rich Navy #001219 ΔE 0.072
- Midnight Purple #280137 ΔE 0.072
- Midnight #03012D ΔE 0.075
- Dark Navy Blue #00022E ΔE 0.083
- Rich Black #0D1B2A ΔE 0.086
Use #180318 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.