#443B78
Closest named color: Dark Slate Blue (#483D8B). oklch(39.3% 0.1 287.6), rgb(68, 59, 120).
Aa
White text reads best on this color (9.80:1).
About this color
#443B78 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.100 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.033 away. White text reads best on it, at 9.80:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #443B78 |
| RGB | rgb(68, 59, 120) |
| HSL | hsl(249, 34%, 35%) |
| OKLCH | oklch(39.3% 0.1 287.6) |
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 #443B78 | 9.80:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #443B78 | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #443B78 text on white | 9.80:1 | AAA | Lc 92.6 | Preferred for body text |
| #443B78 text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BDBAEF
oklch(80.9% 0.074 287.2)
-
Step 400
400
#9D94E7
oklch(70.7% 0.12 287.9)
-
Step 500
500
#8677E0
oklch(63.1% 0.154 287.7)
-
Step 600
600
#715DCE
oklch(55.5% 0.168 287.8)
-
Step 700
700
#5F4CB2
oklch(49.1% 0.156 287.8)
-
Step 800
800
#4D3F90
oklch(42.6% 0.129 287.6)
-
Step 900
900 (this color)
#443B78
oklch(39.3% 0.1 287.6)
-
Step 950
950
#252043
oklch(26.9% 0.064 287.9)
#443B78 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) | #22457A | 0.050 |
| Deuteranopia (no green cones) | #224277 | 0.048 |
| Tritanopia (no blue cones) | #354754 | 0.082 |
| Achromatopsia (no color) | #444444 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #443B78
#443B78
oklch(39.3% 0.1 287.6)
- #4B4900
#4B4900
oklch(39.4% 0.085 107.9)
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 #443B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.033
- Blueberry #464196 ΔE 0.051
- Cobalt #1E488F ΔE 0.063
- Twilight Blue #0A437A ΔE 0.064
- Twilight #4E518B ΔE 0.068
- Light Navy #155084 ΔE 0.073
- Dusk #4E5481 ΔE 0.074
- Dusk Blue #26538D ΔE 0.075
Use #443B78 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.