#433F59
Closest named color: Dark Grey Blue (#29465B). oklch(38.3% 0.044 291.2), rgb(67, 63, 89).
Aa
White text reads best on this color (10.02:1).
About this color
#433F59 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.044 and its hue 291°. 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 10.02:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #433F59 |
| RGB | rgb(67, 63, 89) |
| HSL | hsl(249, 17%, 30%) |
| OKLCH | oklch(38.3% 0.044 291.2) |
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 #433F59 | 10.02:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #433F59 | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #433F59 text on white | 10.02:1 | AAA | Lc 93.3 | Preferred for body text |
| #433F59 text on black | 2.09:1 | Fails | Lc -9.2 | 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
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#D9D7E5
oklch(88.5% 0.019 292.6)
-
Step 300
300
#C0BDD5
oklch(80.8% 0.034 291.4)
-
Step 400
400
#A09BC0
oklch(70.6% 0.054 291.2)
-
Step 500
500
#8983B0
oklch(63.2% 0.067 290.4)
-
Step 600
600
#736C9B
oklch(55.6% 0.072 290.7)
-
Step 700
700
#615A85
oklch(49.2% 0.068 291.1)
-
Step 800
800
#4F496C
oklch(42.6% 0.058 291.6)
-
Step 900
900 (this color)
#433F59
oklch(38.3% 0.044 291.2)
-
Step 950
950
#262433
oklch(26.9% 0.028 290.5)
#433F59 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) | #39435A | 0.019 |
| Deuteranopia (no green cones) | #394258 | 0.018 |
| Tritanopia (no blue cones) | #3E4348 | 0.037 |
| Achromatopsia (no color) | #424242 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #433F59
#433F59
oklch(38.3% 0.044 291.2)
- #444529
#444529
oklch(38.2% 0.044 110.1)
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 #433F59, 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 0.045
- Charcoal #264653 ΔE 0.048
- Onyx #343A40 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.060
- Dark Slate Gray #2F4F4F ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.068
- Gunmetal #293241 ΔE 0.071
Use #433F59 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.