#4B437B
Closest named color: Dark Slate Blue (#483D8B). oklch(41.8% 0.091 288.3), rgb(75, 67, 123).
Aa
White text reads best on this color (8.79:1).
About this color
#4B437B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.091 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 8.79:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #4B437B |
| RGB | rgb(75, 67, 123) |
| HSL | hsl(249, 29%, 37%) |
| OKLCH | oklch(41.8% 0.091 288.3) |
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 #4B437B | 8.79:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #4B437B | 2.38:1 | Fails | Lc 14.0 | Not readable |
| #4B437B text on white | 8.79:1 | AAA | Lc 90.0 | Fine for body text |
| #4B437B text on black | 2.38:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F4
oklch(93.5% 0.016 289.9)
-
Step 200
200
#D8D6EC
oklch(88.4% 0.03 289.9)
-
Step 300
300
#BEBCE2
oklch(80.9% 0.053 287.6)
-
Step 400
400
#9E98D3
oklch(70.7% 0.086 288.7)
-
Step 500
500
#877EC8
oklch(63.1% 0.11 288.4)
-
Step 600
600
#7166B4
oklch(55.6% 0.119 288.4)
-
Step 700
700
#5F559B
oklch(49.2% 0.11 288.2)
-
Step 800
800 (this color)
#4B437B
oklch(41.8% 0.091 288.3)
-
Step 900
900
#403B65
oklch(37.7% 0.071 288)
-
Step 950
950
#25233B
oklch(27% 0.044 286.9)
#4B437B 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) | #304C7D | 0.043 |
| Deuteranopia (no green cones) | #30497A | 0.041 |
| Tritanopia (no blue cones) | #3E4E59 | 0.077 |
| Achromatopsia (no color) | #4A4A4A | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B437B
#4B437B
oklch(41.8% 0.091 288.3)
- #515000
#515000
oklch(41.8% 0.091 108.9)
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 #4B437B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Twilight #4E518B ΔE 0.044
- Blueberry #464196 ΔE 0.047
- Dusk #4E5481 ΔE 0.049
- Dusk Blue #26538D ΔE 0.062
- Cobalt #1E488F ΔE 0.063
- Dusty Grape #545775 ΔE 0.065
- Light Navy #155084 ΔE 0.066
Use #4B437B 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.