#383383
Closest named color: Dark Slate Blue (#483D8B). oklch(37.5% 0.13 280.9), rgb(56, 51, 131).
Aa
White text reads best on this color (10.66:1).
About this color
#383383 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.130 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.66:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.96:1 |
| White text | 10.66:1 |
Values
| HEX | #383383 |
| RGB | rgb(56, 51, 131) |
| HSL | hsl(244, 44%, 36%) |
| OKLCH | oklch(37.5% 0.13 280.9) |
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 #383383 | 10.66:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #383383 | 1.96:1 | Fails | Lc 9.5 | Not readable |
| #383383 text on white | 10.66:1 | AAA | Lc 94.4 | Preferred for body text |
| #383383 text on black | 1.96:1 | Fails | Lc -8.2 | 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 900.
-
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
#D2D6FD
oklch(88.5% 0.054 280.6)
-
Step 300
300
#B5BAFF
oklch(81% 0.097 280.8)
-
Step 400
400
#9192FF
oklch(70.7% 0.157 281.2)
-
Step 500
500
#7973FD
oklch(63.2% 0.199 281)
-
Step 600
600
#6456EC
oklch(55.6% 0.217 280.9)
-
Step 700
700
#5445CD
oklch(49.1% 0.201 281)
-
Step 800
800
#443AA6
oklch(42.7% 0.167 280.8)
-
Step 900
900 (this color)
#383383
oklch(37.5% 0.13 280.9)
-
Step 950
950
#211F4D
oklch(27% 0.082 281.3)
#383383 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) | #004186 | 0.057 |
| Deuteranopia (no green cones) | #003B81 | 0.055 |
| Tritanopia (no blue cones) | #134656 | 0.111 |
| Achromatopsia (no color) | #3E3E3E | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383383
#383383
oklch(37.5% 0.13 280.9)
- #4A4200
#4A4200
oklch(37.6% 0.079 101.6)
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 #383383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.053
- Cobalt #1E488F ΔE 0.060
- Twilight Blue #0A437A ΔE 0.062
- Sapphire #2138AB ΔE 0.072
- Marine Blue #01386A ΔE 0.073
- Indigo #4B0082 ΔE 0.082
- Light Navy #155084 ΔE 0.082
Use #383383 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.