#18163F
Closest named color: Navy Blue (#001146). oklch(23% 0.076 280.8), rgb(24, 22, 63).
Aa
White text reads best on this color (17.13:1).
About this color
#18163F is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.076 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.043 away. White text reads best on it, at 17.13:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.22:1 |
| White text | 17.13:1 |
Values
| HEX | #18163F |
| RGB | rgb(24, 22, 63) |
| HSL | hsl(243, 48%, 17%) |
| OKLCH | oklch(23% 0.076 280.8) |
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 #18163F | 17.13:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #18163F | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #18163F text on white | 17.13:1 | AAA | Lc 103.9 | Preferred for body text |
| #18163F text on black | 1.22:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B6BAFA
oklch(80.9% 0.09 281.4)
-
Step 400
400
#9194F7
oklch(70.6% 0.143 280.7)
-
Step 500
500
#7976F4
oklch(63.1% 0.183 280.8)
-
Step 600
600
#645BE3
oklch(55.7% 0.199 280.7)
-
Step 700
700
#5449C5
oklch(49.1% 0.186 281.1)
-
Step 800
800
#443D9F
oklch(42.7% 0.153 280.9)
-
Step 900
900
#39367E
oklch(37.8% 0.118 281)
-
Step 950
950 (this color)
#18163F
oklch(23% 0.076 280.8)
#18163F 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) | #001D40 | 0.035 |
| Deuteranopia (no green cones) | #001A3E | 0.033 |
| Tritanopia (no blue cones) | #062027 | 0.067 |
| Achromatopsia (no color) | #1B1B1B | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18163F
#18163F
oklch(23% 0.076 280.8)
- #221D00
#221D00
oklch(22.9% 0.048 100.3)
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 #18163F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.043
- Dark Indigo #1F0954 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.050
- Oxford Blue #1B263B ΔE 0.054
- Dark #1B2431 ΔE 0.058
- Midnight Purple #280137 ΔE 0.060
- Night Blue #040348 ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.064
Use #18163F 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.