#18103D
Closest named color: Navy Blue (#001146). oklch(21.6% 0.082 285.4), rgb(24, 16, 61).
Aa
White text reads best on this color (17.79:1).
About this color
#18103D is a very dark, moderately saturated purple. In OKLCH its lightness is 22%, its chroma 0.082 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.042 away. White text reads best on it, at 17.79:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.18:1 |
| White text | 17.79:1 |
Values
| HEX | #18103D |
| RGB | rgb(24, 16, 61) |
| HSL | hsl(251, 58%, 15%) |
| OKLCH | oklch(21.6% 0.082 285.4) |
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 #18103D | 17.79:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #18103D | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #18103D text on white | 17.79:1 | AAA | Lc 104.3 | Preferred for body text |
| #18103D 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D5D5FC
oklch(88.5% 0.053 285.3)
-
Step 300
300
#BAB8FD
oklch(80.9% 0.097 285.3)
-
Step 400
400
#9990FC
oklch(70.7% 0.155 285.5)
-
Step 500
500
#826FFA
oklch(63% 0.199 285.4)
-
Step 600
600
#6E52E9
oklch(55.5% 0.217 285.4)
-
Step 700
700
#5D41CB
oklch(49.1% 0.202 285.6)
-
Step 800
800
#4B37A4
oklch(42.7% 0.167 285.3)
-
Step 900
900
#3E3282
oklch(37.8% 0.129 285.3)
-
Step 950
950 (this color)
#18103D
oklch(21.6% 0.082 285.4)
#18103D 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) | #00193E | 0.040 |
| Deuteranopia (no green cones) | #00163C | 0.038 |
| Tritanopia (no blue cones) | #091B24 | 0.069 |
| Achromatopsia (no color) | #181818 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18103D
#18103D
oklch(21.6% 0.082 285.4)
- #1D1B00
#1D1B00
oklch(21.7% 0.046 105.9)
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 #18103D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.042
- Dark Indigo #1F0954 ΔE 0.046
- Midnight Purple #280137 ΔE 0.049
- Night Blue #040348 ΔE 0.055
- Very Dark Purple #2A0134 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.056
- Dark Navy #000435 ΔE 0.066
- Dark Purple #35063E ΔE 0.067
Use #18103D 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.