#4F397A
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.107 296.9), rgb(79, 57, 122).
Aa
White text reads best on this color (9.55:1).
About this color
#4F397A is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.107 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 0.031 away. White text reads best on it, at 9.55:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.55:1 |
Values
| HEX | #4F397A |
| RGB | rgb(79, 57, 122) |
| HSL | hsl(260, 36%, 35%) |
| OKLCH | oklch(40.2% 0.107 296.9) |
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 #4F397A | 9.55:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #4F397A | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #4F397A text on white | 9.55:1 | AAA | Lc 91.9 | Preferred for body text |
| #4F397A text on black | 2.19:1 | Fails | Lc -10.5 | 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
#DCD4F4
oklch(88.6% 0.044 296.9)
-
Step 300
300
#C6B6EF
oklch(80.9% 0.081 297.4)
-
Step 400
400
#A98EE7
oklch(70.6% 0.13 296.9)
-
Step 500
500
#9570DF
oklch(63.1% 0.163 296.8)
-
Step 600
600
#8055CD
oklch(55.6% 0.178 296.7)
-
Step 700
700
#6D44B1
oklch(49% 0.166 297.2)
-
Step 800
800
#58398F
oklch(42.6% 0.137 296.8)
-
Step 900
900 (this color)
#4F397A
oklch(40.2% 0.107 296.9)
-
Step 950
950
#2A1E43
oklch(27% 0.067 296.6)
#4F397A 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) | #21467C | 0.070 |
| Deuteranopia (no green cones) | #264478 | 0.065 |
| Tritanopia (no blue cones) | #454654 | 0.084 |
| Achromatopsia (no color) | #454545 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F397A
#4F397A
oklch(40.2% 0.107 296.9)
- #454E00
#454E00
oklch(40.2% 0.093 117.1)
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 #4F397A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Blueberry #464196 ΔE 0.050
- Twilight #4E518B ΔE 0.067
- Rebecca Purple #663399 ΔE 0.067
- Dusk #4E5481 ΔE 0.074
- Cobalt #1E488F ΔE 0.077
- Twilight Blue #0A437A ΔE 0.084
- Dusk Blue #26538D ΔE 0.085
Use #4F397A 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.