#433378
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.113 290.6), rgb(67, 51, 120).
Aa
White text reads best on this color (10.58:1).
About this color
#433378 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.113 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.040 away. White text reads best on it, at 10.58:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.98:1 |
| White text | 10.58:1 |
Values
| HEX | #433378 |
| RGB | rgb(67, 51, 120) |
| HSL | hsl(254, 40%, 34%) |
| OKLCH | oklch(37.7% 0.113 290.6) |
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 #433378 | 10.58:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #433378 | 1.98:1 | Fails | Lc 9.6 | Not readable |
| #433378 text on white | 10.58:1 | AAA | Lc 94.3 | Preferred for body text |
| #433378 text on black | 1.98:1 | Fails | Lc -8.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F7
oklch(88.4% 0.048 290.6)
-
Step 300
300
#C0B8F4
oklch(81% 0.084 290.5)
-
Step 400
400
#A190EE
oklch(70.7% 0.135 290.8)
-
Step 500
500
#8C71E9
oklch(63.1% 0.174 290.9)
-
Step 600
600
#7756D7
oklch(55.6% 0.189 290.7)
-
Step 700
700
#6445BA
oklch(49% 0.175 290.7)
-
Step 800
800
#523A97
oklch(42.8% 0.145 290.8)
-
Step 900
900 (this color)
#433378
oklch(37.7% 0.113 290.6)
-
Step 950
950
#271F46
oklch(27.1% 0.07 290.3)
#433378 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) | #0F407A | 0.067 |
| Deuteranopia (no green cones) | #133D76 | 0.064 |
| Tritanopia (no blue cones) | #344250 | 0.093 |
| Achromatopsia (no color) | #3F3F3F | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433378
#433378
oklch(37.7% 0.113 290.6)
- #444500
#444500
oklch(37.7% 0.083 110.7)
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 #433378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.040
- Blueberry #464196 ΔE 0.059
- Twilight Blue #0A437A ΔE 0.072
- Cobalt #1E488F ΔE 0.074
- Marine Blue #01386A ΔE 0.080
- Indigo #4B0082 ΔE 0.081
- Prussian Blue #1D3557 ΔE 0.084
- Rebecca Purple #663399 ΔE 0.085
Use #433378 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.