#180A2A
Closest named color: Midnight Purple (#280137). oklch(18.6% 0.063 300.6), rgb(24, 10, 42).
Aa
White text reads best on this color (18.82:1).
About this color
#180A2A is a very dark, muted purple. In OKLCH its lightness is 19%, its chroma 0.063 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.048 away. White text reads best on it, at 18.82:1.
| Hue family | Purples |
| Lightness | very dark (19%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.11:1 |
| White text | 18.82:1 |
Values
| HEX | #180A2A |
| RGB | rgb(24, 10, 42) |
| HSL | hsl(266, 62%, 10%) |
| OKLCH | oklch(18.6% 0.063 300.6) |
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 #180A2A | 18.82:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #180A2A | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #180A2A text on white | 18.82:1 | AAA | Lc 105.2 | Preferred for body text |
| #180A2A 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD3F1
oklch(88.4% 0.042 300.7)
-
Step 300
300
#C8B6EA
oklch(80.9% 0.075 300.6)
-
Step 400
400
#AD8FDF
oklch(70.8% 0.118 300.7)
-
Step 500
500
#9971D6
oklch(63.1% 0.151 300.4)
-
Step 600
600
#8456C3
oklch(55.5% 0.165 300.6)
-
Step 700
700
#7046A9
oklch(49.1% 0.154 300.4)
-
Step 800
800
#5B3A89
oklch(42.7% 0.128 300.3)
-
Step 900
900
#4B336D
oklch(37.8% 0.098 300.9)
-
Step 950
950 (this color)
#180A2A
oklch(18.6% 0.063 300.6)
#180A2A 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) | #00112B | 0.048 |
| Deuteranopia (no green cones) | #021129 | 0.045 |
| Tritanopia (no blue cones) | #141118 | 0.048 |
| Achromatopsia (no color) | #111111 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180A2A
#180A2A
oklch(18.6% 0.063 300.6)
- #101600
#101600
oklch(18.7% 0.045 121.7)
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 #180A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.048
- Very Dark Purple #2A0134 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.057
- Midnight #03012D ΔE 0.064
- Dark Navy #000435 ΔE 0.064
- Rich Navy #001219 ΔE 0.066
- Dark Navy Blue #00022E ΔE 0.069
- Navy Blue #001146 ΔE 0.070
Use #180A2A 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.