#433F57
Closest named color: Dark Grey Blue (#29465B). oklch(38.2% 0.041 292), rgb(67, 63, 87).
Aa
White text reads best on this color (10.06:1).
About this color
#433F57 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.041 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.040 away. White text reads best on it, at 10.06:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.08:1 |
| White text | 10.06:1 |
Values
| HEX | #433F57 |
| RGB | rgb(67, 63, 87) |
| HSL | hsl(250, 16%, 29%) |
| OKLCH | oklch(38.2% 0.041 292) |
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 #433F57 | 10.06:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #433F57 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #433F57 text on white | 10.06:1 | AAA | Lc 93.4 | Preferred for body text |
| #433F57 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
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C0BDD3
oklch(80.8% 0.031 292)
-
Step 400
400
#A19CBD
oklch(70.8% 0.048 292.1)
-
Step 500
500
#8A83AD
oklch(63.1% 0.063 292.1)
-
Step 600
600
#746C98
oklch(55.6% 0.068 292.4)
-
Step 700
700
#615A82
oklch(49% 0.064 291.9)
-
Step 800
800
#4F4A6A
oklch(42.7% 0.053 291.2)
-
Step 900
900 (this color)
#433F57
oklch(38.2% 0.041 292)
-
Step 950
950
#262432
oklch(26.9% 0.026 291.1)
#433F57 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) | #394258 | 0.017 |
| Deuteranopia (no green cones) | #3A4256 | 0.017 |
| Tritanopia (no blue cones) | #3F4347 | 0.035 |
| Achromatopsia (no color) | #424242 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433F57
#433F57
oklch(38.2% 0.041 292)
- #43452C
#43452C
oklch(38.1% 0.04 112)
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 #433F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.042
- Charcoal #264653 ΔE 0.046
- Onyx #343A40 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.058
- Dark Slate Gray #2F4F4F ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.068
- Gunmetal #293241 ΔE 0.070
Use #433F57 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.