#4F437E
Closest named color: Dark Slate Blue (#483D8B). oklch(42.4% 0.096 291.1), rgb(79, 67, 126).
Aa
White text reads best on this color (8.61:1).
About this color
#4F437E is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.096 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 8.61:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #4F437E |
| RGB | rgb(79, 67, 126) |
| HSL | hsl(252, 31%, 38%) |
| OKLCH | oklch(42.4% 0.096 291.1) |
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 #4F437E | 8.61:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #4F437E | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #4F437E text on white | 8.61:1 | AAA | Lc 89.5 | Fine for body text |
| #4F437E text on black | 2.43:1 | Fails | Lc -12.8 | 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
#D9D6ED
oklch(88.5% 0.031 291.7)
-
Step 300
300
#C0BBE3
oklch(80.9% 0.056 290.8)
-
Step 400
400
#A097D5
oklch(70.7% 0.09 290.6)
-
Step 500
500
#8A7CC9
oklch(63.1% 0.114 291.1)
-
Step 600
600
#7564B6
oklch(55.6% 0.125 291.3)
-
Step 700
700
#62539D
oklch(49.2% 0.116 290.8)
-
Step 800
800 (this color)
#4F437E
oklch(42.4% 0.096 291.1)
-
Step 900
900
#423A66
oklch(37.8% 0.074 290.8)
-
Step 950
950
#27223C
oklch(27.1% 0.048 291.7)
#4F437E 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) | #2F4D80 | 0.050 |
| Deuteranopia (no green cones) | #304B7D | 0.048 |
| Tritanopia (no blue cones) | #434E5A | 0.079 |
| Achromatopsia (no color) | #4C4C4C | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F437E
#4F437E
oklch(42.4% 0.096 291.1)
- #515200
#515200
oklch(42.4% 0.093 110.6)
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 #4F437E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Twilight #4E518B ΔE 0.041
- Blueberry #464196 ΔE 0.044
- Dusk #4E5481 ΔE 0.048
- Dusty Grape #545775 ΔE 0.065
- Dusk Blue #26538D ΔE 0.065
- Cobalt #1E488F ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.071
Use #4F437E 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.