#433A8B
Closest named color: Dark Slate Blue (#483D8B). oklch(40.4% 0.13 284), rgb(67, 58, 139).
Aa
White text reads best on this color (9.47:1).
About this color
#433A8B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.130 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.012 away. White text reads best on it, at 9.47:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #433A8B |
| RGB | rgb(67, 58, 139) |
| HSL | hsl(247, 41%, 39%) |
| OKLCH | oklch(40.4% 0.13 284) |
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 #433A8B | 9.47:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #433A8B | 2.21:1 | Fails | Lc 12.3 | Not readable |
| #433A8B text on white | 9.47:1 | AAA | Lc 91.6 | Preferred for body text |
| #433A8B text on black | 2.21:1 | Fails | Lc -10.8 | 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 800.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D5D6F5
oklch(88.5% 0.042 284)
-
Step 300
300
#BABBF1
oklch(81% 0.076 283.7)
-
Step 400
400
#9895E9
oklch(70.6% 0.121 284.5)
-
Step 500
500
#8079E3
oklch(63.1% 0.155 284)
-
Step 600
600
#6B5FD1
oklch(55.6% 0.17 284.2)
-
Step 700
700
#594EB5
oklch(49.1% 0.157 283.8)
-
Step 800
800 (this color)
#433A8B
oklch(40.4% 0.13 284)
-
Step 900
900
#3C3875
oklch(37.8% 0.101 283.4)
-
Step 950
950
#232144
oklch(27% 0.064 283.9)
#433A8B 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) | #01488E | 0.066 |
| Deuteranopia (no green cones) | #004389 | 0.066 |
| Tritanopia (no blue cones) | #284C5C | 0.110 |
| Achromatopsia (no color) | #464646 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433A8B
#433A8B
oklch(40.4% 0.13 284)
- #514A00
#514A00
oklch(40.3% 0.085 103.3)
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 #433A8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.012
- Blueberry #464196 ΔE 0.025
- Cobalt #1E488F ΔE 0.054
- Twilight #4E518B ΔE 0.067
- Rebecca Purple #663399 ΔE 0.068
- Sapphire #2138AB ΔE 0.070
- Twilight Blue #0A437A ΔE 0.071
- Dusk Blue #26538D ΔE 0.072
Use #433A8B 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.