#433A78
Closest named color: Dark Slate Blue (#483D8B). oklch(39% 0.102 287.4), rgb(67, 58, 120).
Aa
White text reads best on this color (9.92:1).
About this color
#433A78 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.102 and its hue 287°. 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 9.92:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #433A78 |
| RGB | rgb(67, 58, 120) |
| HSL | hsl(249, 35%, 35%) |
| OKLCH | oklch(39% 0.102 287.4) |
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 #433A78 | 9.92:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #433A78 | 2.11:1 | Fails | Lc 11.1 | Not readable |
| #433A78 text on white | 9.92:1 | AAA | Lc 92.9 | Preferred for body text |
| #433A78 text on black | 2.11:1 | Fails | Lc -9.6 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BDBAF0
oklch(81% 0.076 287.1)
-
Step 400
400
#9C94E9
oklch(70.7% 0.123 287.1)
-
Step 500
500
#8677E2
oklch(63.2% 0.156 287.5)
-
Step 600
600
#715DCF
oklch(55.6% 0.169 287.7)
-
Step 700
700
#5F4CB4
oklch(49.2% 0.158 287.5)
-
Step 800
800
#4D3F91
oklch(42.7% 0.13 287.4)
-
Step 900
900 (this color)
#433A78
oklch(39% 0.102 287.4)
-
Step 950
950
#252044
oklch(26.9% 0.065 287.6)
#433A78 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) | #20447A | 0.051 |
| Deuteranopia (no green cones) | #204177 | 0.049 |
| Tritanopia (no blue cones) | #334753 | 0.086 |
| Achromatopsia (no color) | #434343 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433A78
#433A78
oklch(39% 0.102 287.4)
- #4A4800
#4A4800
oklch(39.1% 0.084 107.9)
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 #433A78, 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 0.052
- Cobalt #1E488F ΔE 0.063
- Twilight Blue #0A437A ΔE 0.064
- Twilight #4E518B ΔE 0.071
- Light Navy #155084 ΔE 0.074
- Dusk Blue #26538D ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.077
Use #433A78 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.