#4F5178
Closest named color: Dusk (#4E5481). oklch(45% 0.064 281.3), rgb(79, 81, 120).
Aa
White text reads best on this color (7.55:1).
About this color
#4F5178 is a dark, muted purple. In OKLCH its lightness is 45%, its chroma 0.064 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.015 away. White text reads best on it, at 7.55:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.78:1 |
| White text | 7.55:1 |
Values
| HEX | #4F5178 |
| RGB | rgb(79, 81, 120) |
| HSL | hsl(237, 21%, 39%) |
| OKLCH | oklch(45% 0.064 281.3) |
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 #4F5178 | 7.55:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #4F5178 | 2.78:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #4F5178 text on white | 7.55:1 | AAA | Lc 86.2 | Fine for body text |
| #4F5178 text on black | 2.78:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BCBED9
oklch(80.9% 0.038 282.2)
-
Step 400
400
#9A9DC6
oklch(70.8% 0.06 281.5)
-
Step 500
500
#8184B7
oklch(63% 0.077 281.4)
-
Step 600
600
#6B6DA3
oklch(55.5% 0.083 281.7)
-
Step 700
700
#595B8B
oklch(49% 0.077 281.3)
-
Step 800
800 (this color)
#4F5178
oklch(45% 0.064 281.3)
-
Step 900
900
#3D3E5C
oklch(37.6% 0.051 282.2)
-
Step 950
950
#242536
oklch(27.1% 0.031 281.5)
#4F5178 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) | #45567A | 0.019 |
| Deuteranopia (no green cones) | #435377 | 0.018 |
| Tritanopia (no blue cones) | #44585F | 0.055 |
| Achromatopsia (no color) | #545454 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F5178
#4F5178
oklch(45% 0.064 281.3)
- #5D562A
#5D562A
oklch(44.9% 0.064 100.4)
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 #4F5178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.015
- Dusty Grape #545775 ΔE 0.022
- Twilight #4E518B ΔE 0.032
- YInMn Blue #415A77 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.050
- Dusky Blue #475F94 ΔE 0.053
- Denim #3B638C ΔE 0.057
Use #4F5178 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.