#4F387A
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.109 297.3), rgb(79, 56, 122).
Aa
White text reads best on this color (9.63:1).
About this color
#4F387A is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.109 and its hue 297°. 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 9.63:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.63:1 |
Values
| HEX | #4F387A |
| RGB | rgb(79, 56, 122) |
| HSL | hsl(261, 37%, 35%) |
| OKLCH | oklch(40% 0.109 297.3) |
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 #4F387A | 9.63:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #4F387A | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #4F387A text on white | 9.63:1 | AAA | Lc 92.1 | Preferred for body text |
| #4F387A text on black | 2.17:1 | Fails | Lc -10.3 | 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 900.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F4
oklch(88.4% 0.046 297.9)
-
Step 300
300
#C6B6EF
oklch(80.9% 0.081 297.4)
-
Step 400
400
#AA8EE7
oklch(70.7% 0.13 297.5)
-
Step 500
500
#966FE0
oklch(63.1% 0.166 297.3)
-
Step 600
600
#8154CE
oklch(55.6% 0.181 297.1)
-
Step 700
700
#6E43B2
oklch(49.1% 0.169 297.7)
-
Step 800
800
#593890
oklch(42.6% 0.14 297.4)
-
Step 900
900 (this color)
#4F387A
oklch(40% 0.109 297.3)
-
Step 950
950
#2B1E43
oklch(27.1% 0.068 298)
#4F387A 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) | #1F457C | 0.072 |
| Deuteranopia (no green cones) | #254478 | 0.067 |
| Tritanopia (no blue cones) | #454553 | 0.086 |
| Achromatopsia (no color) | #454545 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F387A
#4F387A
oklch(40% 0.109 297.3)
- #444E00
#444E00
oklch(40.1% 0.093 117.8)
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 #4F387A, 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
- Blueberry #464196 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.067
- Twilight #4E518B ΔE 0.069
- Dusk #4E5481 ΔE 0.077
- Cobalt #1E488F ΔE 0.078
- Twilight Blue #0A437A ΔE 0.084
- Dusk Blue #26538D ΔE 0.087
Use #4F387A 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.