#18143A
Closest named color: Rich Black (#0D1B2A). oklch(22.1% 0.071 283.8), rgb(24, 20, 58).
Aa
White text reads best on this color (17.50:1).
About this color
#18143A is a very dark, moderately saturated purple. In OKLCH its lightness is 22%, its chroma 0.071 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.045 away. White text reads best on it, at 17.50:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.50:1 |
Values
| HEX | #18143A |
| RGB | rgb(24, 20, 58) |
| HSL | hsl(246, 49%, 15%) |
| OKLCH | oklch(22.1% 0.071 283.8) |
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 #18143A | 17.50:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #18143A | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #18143A text on white | 17.50:1 | AAA | Lc 104.2 | Preferred for body text |
| #18143A text on black | 1.19:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F8
oklch(88.5% 0.047 282.7)
-
Step 300
300
#B9BAF6
oklch(80.9% 0.084 283.6)
-
Step 400
400
#9794F1
oklch(70.8% 0.134 283.9)
-
Step 500
500
#7F76EC
oklch(63.1% 0.172 283.8)
-
Step 600
600
#6A5CDA
oklch(55.6% 0.186 283.6)
-
Step 700
700
#594ABD
oklch(49% 0.173 283.9)
-
Step 800
800
#483E99
oklch(42.7% 0.143 283.5)
-
Step 900
900
#3C367A
oklch(37.7% 0.112 283.6)
-
Step 950
950 (this color)
#18143A
oklch(22.1% 0.071 283.8)
#18143A 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) | #001B3B | 0.037 |
| Deuteranopia (no green cones) | #001839 | 0.036 |
| Tritanopia (no blue cones) | #0B1D24 | 0.061 |
| Achromatopsia (no color) | #191919 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18143A
#18143A
oklch(22.1% 0.071 283.8)
- #1F1C00
#1F1C00
oklch(22.3% 0.047 104)
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 #18143A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.045
- Navy Blue #001146 ΔE 0.046
- Dark Indigo #1F0954 ΔE 0.054
- Midnight Purple #280137 ΔE 0.055
- Very Dark Purple #2A0134 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.059
- Dark #1B2431 ΔE 0.060
- Night Blue #040348 ΔE 0.063
Use #18143A 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.