#434366
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.059 283.4), rgb(67, 67, 102).
Aa
White text reads best on this color (9.40:1).
About this color
#434366 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.059 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 9.40:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #434366 |
| RGB | rgb(67, 67, 102) |
| HSL | hsl(240, 21%, 33%) |
| OKLCH | oklch(39.9% 0.059 283.4) |
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 #434366 | 9.40:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #434366 | 2.23:1 | Fails | Lc 12.3 | Not readable |
| #434366 text on white | 9.40:1 | AAA | Lc 91.7 | Preferred for body text |
| #434366 text on black | 2.23:1 | Fails | Lc -10.7 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D7E9
oklch(88.4% 0.025 283.3)
-
Step 300
300
#BCBEDD
oklch(81% 0.044 282.5)
-
Step 400
400
#9A9BCC
oklch(70.6% 0.071 283.5)
-
Step 500
500
#8282BE
oklch(63% 0.09 283.5)
-
Step 600
600
#6C6BAB
oklch(55.6% 0.098 283.4)
-
Step 700
700
#5A5992
oklch(49.1% 0.09 283.4)
-
Step 800
800
#4A4977
oklch(42.8% 0.075 283.7)
-
Step 900
900 (this color)
#434366
oklch(39.9% 0.059 283.4)
-
Step 950
950
#242438
oklch(27% 0.037 283.7)
#434366 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) | #394767 | 0.018 |
| Deuteranopia (no green cones) | #374565 | 0.019 |
| Tritanopia (no blue cones) | #3A4950 | 0.050 |
| Achromatopsia (no color) | #464646 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434366
#434366
oklch(39.9% 0.059 283.4)
- #4D4921
#4D4921
oklch(39.9% 0.059 103.6)
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 #434366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- Charcoal #264653 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.063
- Dusk #4E5481 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.068
- Dusty Grape #545775 ΔE 0.068
- YInMn Blue #415A77 ΔE 0.069
Use #434366 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.