#180F38
Closest named color: Midnight Purple (#280137). oklch(20.9% 0.076 288.1), rgb(24, 15, 56).
Aa
White text reads best on this color (18.03:1).
About this color
#180F38 is a very dark, moderately saturated purple. In OKLCH its lightness is 21%, its chroma 0.076 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.047 away. White text reads best on it, at 18.03:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.16:1 |
| White text | 18.03:1 |
Values
| HEX | #180F38 |
| RGB | rgb(24, 15, 56) |
| HSL | hsl(253, 58%, 14%) |
| OKLCH | oklch(20.9% 0.076 288.1) |
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 #180F38 | 18.03:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #180F38 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #180F38 text on white | 18.03:1 | AAA | Lc 104.6 | Preferred for body text |
| #180F38 text on black | 1.16:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D7D5F9
oklch(88.6% 0.049 287.9)
-
Step 300
300
#BDB8F8
oklch(80.9% 0.09 287.8)
-
Step 400
400
#9D90F4
oklch(70.6% 0.144 288.1)
-
Step 500
500
#8771F0
oklch(63.1% 0.183 287.9)
-
Step 600
600
#7355DF
oklch(55.6% 0.2 288.1)
-
Step 700
700
#6144C1
oklch(49.1% 0.186 288.3)
-
Step 800
800
#4F399C
oklch(42.7% 0.154 288.4)
-
Step 900
900
#41337C
oklch(37.8% 0.119 288.2)
-
Step 950
950 (this color)
#180F38
oklch(20.9% 0.076 288.1)
#180F38 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) | #001739 | 0.041 |
| Deuteranopia (no green cones) | #001537 | 0.040 |
| Tritanopia (no blue cones) | #0D1921 | 0.063 |
| Achromatopsia (no color) | #161616 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #180F38
#180F38
oklch(20.9% 0.076 288.1)
- #1A1900
#1A1900
oklch(20.8% 0.045 107.7)
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 #180F38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.047
- Navy Blue #001146 ΔE 0.047
- Very Dark Purple #2A0134 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.053
- Dark Indigo #1F0954 ΔE 0.055
- Night Blue #040348 ΔE 0.058
- Dark Navy #000435 ΔE 0.064
- Dark Purple #35063E ΔE 0.068
Use #180F38 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.