#4B407B
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.096 290.1), rgb(75, 64, 123).
Aa
White text reads best on this color (9.05:1).
About this color
#4B407B is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.096 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.030 away. White text reads best on it, at 9.05:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #4B407B |
| RGB | rgb(75, 64, 123) |
| HSL | hsl(251, 32%, 37%) |
| OKLCH | oklch(41.2% 0.096 290.1) |
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 #4B407B | 9.05:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #4B407B | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #4B407B text on white | 9.05:1 | AAA | Lc 90.7 | Preferred for body text |
| #4B407B text on black | 2.31:1 | Fails | Lc -11.6 | 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
#D8D6ED
oklch(88.5% 0.031 289.7)
-
Step 300
300
#BFBBE3
oklch(80.8% 0.056 289.7)
-
Step 400
400
#9F97D5
oklch(70.6% 0.09 289.8)
-
Step 500
500
#897CCA
oklch(63% 0.116 290.3)
-
Step 600
600
#7364B7
oklch(55.5% 0.126 290)
-
Step 700
700
#61539D
oklch(49.1% 0.116 290.2)
-
Step 800
800 (this color)
#4B407B
oklch(41.2% 0.096 290.1)
-
Step 900
900
#413A66
oklch(37.7% 0.074 289.7)
-
Step 950
950
#26223C
oklch(27% 0.048 289.9)
#4B407B 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) | #2B4A7D | 0.050 |
| Deuteranopia (no green cones) | #2C477A | 0.047 |
| Tritanopia (no blue cones) | #3F4C57 | 0.081 |
| Achromatopsia (no color) | #494949 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B407B
#4B407B
oklch(41.2% 0.096 290.1)
- #4E4F00
#4E4F00
oklch(41.3% 0.091 110.6)
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 #4B407B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Blueberry #464196 ΔE 0.045
- Twilight #4E518B ΔE 0.051
- Dusk #4E5481 ΔE 0.057
- Cobalt #1E488F ΔE 0.065
- Dusk Blue #26538D ΔE 0.068
- Light Navy #155084 ΔE 0.070
- Dusty Grape #545775 ΔE 0.073
Use #4B407B 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.