#433C81
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.112 284.7), rgb(67, 60, 129).
Aa
White text reads best on this color (9.53:1).
About this color
#433C81 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.112 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.019 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #433C81 |
| RGB | rgb(67, 60, 129) |
| HSL | hsl(246, 37%, 37%) |
| OKLCH | oklch(40.1% 0.112 284.7) |
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 #433C81 | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #433C81 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #433C81 text on white | 9.53:1 | AAA | Lc 91.9 | Preferred for body text |
| #433C81 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D5D6F8
oklch(88.6% 0.047 284.1)
-
Step 300
300
#BABAF6
oklch(81% 0.084 284.4)
-
Step 400
400
#9893F1
oklch(70.6% 0.135 284.8)
-
Step 500
500
#8175EC
oklch(63% 0.173 284.9)
-
Step 600
600
#6C5BDA
oklch(55.6% 0.187 284.6)
-
Step 700
700
#5B4ABD
oklch(49.2% 0.173 284.8)
-
Step 800
800
#4A3D99
oklch(42.7% 0.144 284.9)
-
Step 900
900 (this color)
#433C81
oklch(40.1% 0.112 284.7)
-
Step 950
950
#232047
oklch(27% 0.07 284.1)
#433C81 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) | #1B4783 | 0.053 |
| Deuteranopia (no green cones) | #19437F | 0.053 |
| Tritanopia (no blue cones) | #2E4B58 | 0.096 |
| Achromatopsia (no color) | #454545 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433C81
#433C81
oklch(40.1% 0.112 284.7)
- #4F4A00
#4F4A00
oklch(40.1% 0.085 105.2)
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 #433C81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.019
- Blueberry #464196 ΔE 0.036
- Cobalt #1E488F ΔE 0.054
- Twilight #4E518B ΔE 0.063
- Twilight Blue #0A437A ΔE 0.064
- Dusk Blue #26538D ΔE 0.068
- Light Navy #155084 ΔE 0.069
- Dusk #4E5481 ΔE 0.072
Use #433C81 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.