#18152E
Closest named color: Rich Black (#0D1B2A). oklch(21.4% 0.048 287.1), rgb(24, 21, 46).
Aa
White text reads best on this color (17.71:1).
About this color
#18152E is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.048 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.71:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.71:1 |
Values
| HEX | #18152E |
| RGB | rgb(24, 21, 46) |
| HSL | hsl(247, 37%, 13%) |
| OKLCH | oklch(21.4% 0.048 287.1) |
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 #18152E | 17.71:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #18152E | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #18152E text on white | 17.71:1 | AAA | Lc 104.5 | Preferred for body text |
| #18152E text on black | 1.18:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D7D6EE
oklch(88.4% 0.033 287.6)
-
Step 300
300
#BDBCE4
oklch(80.9% 0.056 286.2)
-
Step 400
400
#9C98D7
oklch(70.7% 0.091 286.7)
-
Step 500
500
#857DCC
oklch(63% 0.117 287.2)
-
Step 600
600
#7065B9
oklch(55.6% 0.127 287.5)
-
Step 700
700
#5D549F
oklch(49.1% 0.117 286.7)
-
Step 800
800
#4C4581
oklch(42.7% 0.097 286.9)
-
Step 900
900
#3F3A68
oklch(37.6% 0.077 287)
-
Step 950
950 (this color)
#18152E
oklch(21.4% 0.048 287.1)
#18152E 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) | #0C192F | 0.022 |
| Deuteranopia (no green cones) | #0C182D | 0.022 |
| Tritanopia (no blue cones) | #121A1F | 0.040 |
| Achromatopsia (no color) | #181818 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18152E
#18152E
oklch(21.4% 0.048 287.1)
- #1C1A00
#1C1A00
oklch(21.3% 0.045 105.8)
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 #18152E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.059
- Navy Blue #001146 ΔE 0.062
- Midnight Purple #280137 ΔE 0.062
- Very Dark Purple #2A0134 ΔE 0.063
- Rich Navy #001219 ΔE 0.063
- Jet #212529 ΔE 0.063
Use #18152E 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.