#4F4588
Closest named color: Dark Slate Blue (#483D8B). oklch(43.4% 0.108 287.9), rgb(79, 69, 136).
Aa
White text reads best on this color (8.27:1).
About this color
#4F4588 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.108 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.026 away. White text reads best on it, at 8.27:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #4F4588 |
| RGB | rgb(79, 69, 136) |
| HSL | hsl(249, 33%, 40%) |
| OKLCH | oklch(43.4% 0.108 287.9) |
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 #4F4588 | 8.27:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #4F4588 | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #4F4588 text on white | 8.27:1 | AAA | Lc 88.4 | Fine for body text |
| #4F4588 text on black | 2.53:1 | Fails | Lc -13.8 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D7D6F0
oklch(88.5% 0.036 287.4)
-
Step 300
300
#BEBBE8
oklch(81% 0.063 288)
-
Step 400
400
#9D97DC
oklch(70.8% 0.1 287.5)
-
Step 500
500
#867BD2
oklch(63% 0.129 287.9)
-
Step 600
600
#7163BF
oklch(55.6% 0.139 288)
-
Step 700
700
#5F51A5
oklch(49.1% 0.13 288.3)
-
Step 800
800 (this color)
#4F4588
oklch(43.4% 0.108 287.9)
-
Step 900
900
#40396B
oklch(37.7% 0.084 288.1)
-
Step 950
950
#25223F
oklch(27.1% 0.053 287)
#4F4588 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) | #2B508A | 0.053 |
| Deuteranopia (no green cones) | #2B4D86 | 0.052 |
| Tritanopia (no blue cones) | #3F5360 | 0.091 |
| Achromatopsia (no color) | #4E4E4E | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F4588
#4F4588
oklch(43.4% 0.108 287.9)
- #565400
#565400
oklch(43.4% 0.094 108.1)
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 #4F4588, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.026
- Blueberry #464196 ΔE 0.031
- Twilight #4E518B ΔE 0.033
- Dusk #4E5481 ΔE 0.046
- Dusk Blue #26538D ΔE 0.060
- Cobalt #1E488F ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.063
- Rebecca Purple #663399 ΔE 0.064
Use #4F4588 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.