#181340
Closest named color: Navy Blue (#001146). oklch(22.5% 0.082 282.6), rgb(24, 19, 64).
Aa
White text reads best on this color (17.41:1).
About this color
#181340 is a very dark, moderately saturated purple. In OKLCH its lightness is 22%, its chroma 0.082 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.040 away. White text reads best on it, at 17.41:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.20:1 |
| White text | 17.41:1 |
Values
| HEX | #181340 |
| RGB | rgb(24, 19, 64) |
| HSL | hsl(247, 54%, 16%) |
| OKLCH | oklch(22.5% 0.082 282.6) |
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 #181340 | 17.41:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #181340 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #181340 text on white | 17.41:1 | AAA | Lc 104.0 | Preferred for body text |
| #181340 text on black | 1.20:1 | 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
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D3D5FD
oklch(88.4% 0.055 283)
-
Step 300
300
#B7B9FE
oklch(80.9% 0.097 282.7)
-
Step 400
400
#9491FE
oklch(70.7% 0.157 282.9)
-
Step 500
500
#7C72FC
oklch(63.2% 0.199 282.4)
-
Step 600
600
#6855EB
oklch(55.7% 0.216 282.5)
-
Step 700
700
#5744CC
oklch(49.1% 0.2 282.5)
-
Step 800
800
#4739A5
oklch(42.7% 0.166 282.7)
-
Step 900
900
#3B3383
oklch(37.8% 0.13 282.8)
-
Step 950
950 (this color)
#181340
oklch(22.5% 0.082 282.6)
#181340 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) | #001B41 | 0.037 |
| Deuteranopia (no green cones) | #00183F | 0.035 |
| Tritanopia (no blue cones) | #061E27 | 0.070 |
| Achromatopsia (no color) | #1A1A1A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181340
#181340
oklch(22.5% 0.082 282.6)
- #201C00
#201C00
oklch(22.4% 0.047 102)
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 #181340, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.040
- Dark Indigo #1F0954 ΔE 0.042
- Midnight Purple #280137 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.055
- Night Blue #040348 ΔE 0.057
- Very Dark Purple #2A0134 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.063
- Dark #1B2431 ΔE 0.067
Use #181340 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.