#433B71
Closest named color: Dark Slate Blue (#483D8B). oklch(38.8% 0.09 288.3), rgb(67, 59, 113).
Aa
White text reads best on this color (9.98:1).
About this color
#433B71 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.090 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 9.98:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #433B71 |
| RGB | rgb(67, 59, 113) |
| HSL | hsl(249, 31%, 34%) |
| OKLCH | oklch(38.8% 0.09 288.3) |
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 #433B71 | 9.98:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #433B71 | 2.10:1 | Fails | Lc 10.9 | Not readable |
| #433B71 text on white | 9.98:1 | AAA | Lc 93.1 | Preferred for body text |
| #433B71 text on black | 2.10:1 | Fails | Lc -9.4 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BEBAEA
oklch(80.8% 0.067 288.6)
-
Step 400
400
#9E95E0
oklch(70.7% 0.108 288.8)
-
Step 500
500
#877AD7
oklch(63.2% 0.137 288.2)
-
Step 600
600
#7161C4
oklch(55.6% 0.149 288)
-
Step 700
700
#5F4FA9
oklch(49% 0.139 288.4)
-
Step 800
800
#4E4289
oklch(42.8% 0.114 288.4)
-
Step 900
900 (this color)
#433B71
oklch(38.8% 0.09 288.3)
-
Step 950
950
#252140
oklch(26.9% 0.057 287.9)
#433B71 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) | #284473 | 0.043 |
| Deuteranopia (no green cones) | #274170 | 0.042 |
| Tritanopia (no blue cones) | #374650 | 0.076 |
| Achromatopsia (no color) | #424242 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433B71
#433B71
oklch(38.8% 0.09 288.3)
- #494700
#494700
oklch(38.7% 0.083 107.9)
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 #433B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Blueberry #464196 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.067
- Cobalt #1E488F ΔE 0.069
- Twilight #4E518B ΔE 0.073
- Light Navy #155084 ΔE 0.074
- Dusk #4E5481 ΔE 0.076
Use #433B71 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.