#433F55
Closest named color: Charcoal Grey (#3C4142). oklch(38.1% 0.037 292.9), rgb(67, 63, 85).
Aa
White text reads best on this color (10.09:1).
About this color
#433F55 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.037 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.038 away. White text reads best on it, at 10.09:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #433F55 |
| RGB | rgb(67, 63, 85) |
| HSL | hsl(251, 15%, 29%) |
| OKLCH | oklch(38.1% 0.037 292.9) |
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 #433F55 | 10.09:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #433F55 | 2.08:1 | Fails | Lc 10.5 | Not readable |
| #433F55 text on white | 10.09:1 | AAA | Lc 93.4 | Preferred for body text |
| #433F55 text on black | 2.08:1 | Fails | Lc -9.1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#D9D7E3
oklch(88.4% 0.016 293.7)
-
Step 300
300
#C1BED2
oklch(81% 0.028 292.7)
-
Step 400
400
#A19CBB
oklch(70.7% 0.045 292.6)
-
Step 500
500
#8A83AA
oklch(63% 0.058 292.9)
-
Step 600
600
#746D95
oklch(55.6% 0.062 292.3)
-
Step 700
700
#625B7F
oklch(49.2% 0.057 293.1)
-
Step 800
800
#504A67
oklch(42.7% 0.048 293.8)
-
Step 900
900 (this color)
#433F55
oklch(38.1% 0.037 292.9)
-
Step 950
950
#272431
oklch(26.9% 0.024 295.3)
#433F55 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) | #3A4256 | 0.016 |
| Deuteranopia (no green cones) | #3A4154 | 0.016 |
| Tritanopia (no blue cones) | #3F4247 | 0.030 |
| Achromatopsia (no color) | #424242 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433F55
#433F55
oklch(38.1% 0.037 292.9)
- #42452E
#42452E
oklch(38.1% 0.037 114.2)
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 #433F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.045
- Onyx #343A40 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.061
- Gunmetal #293241 ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.068
Use #433F55 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.