#5F3388
Closest named color: Rebecca Purple (#663399). oklch(42% 0.138 305), rgb(95, 51, 136).
Aa
White text reads best on this color (9.06:1).
About this color
#5F3388 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.138 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.030 away. White text reads best on it, at 9.06:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #5F3388 |
| RGB | rgb(95, 51, 136) |
| HSL | hsl(271, 45%, 37%) |
| OKLCH | oklch(42% 0.138 305) |
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 #5F3388 | 9.06:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #5F3388 | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #5F3388 text on white | 9.06:1 | AAA | Lc 90.4 | Preferred for body text |
| #5F3388 text on black | 2.31:1 | Fails | Lc -11.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE6F7
oklch(93.5% 0.024 304.5)
-
Step 200
200
#E0D2F2
oklch(88.5% 0.046 305.2)
-
Step 300
300
#CDB4EB
oklch(81% 0.081 305.4)
-
Step 400
400
#B38BE1
oklch(70.7% 0.129 304.7)
-
Step 500
500
#A16BD8
oklch(63.1% 0.165 305)
-
Step 600
600
#8C50C6
oklch(55.6% 0.179 304.7)
-
Step 700
700
#773FAB
oklch(49% 0.168 304.8)
-
Step 800
800 (this color)
#5F3388
oklch(42% 0.138 305)
-
Step 900
900
#4F2F6F
oklch(37.6% 0.109 304.8)
-
Step 950
950
#2E1C41
oklch(26.9% 0.069 304.6)
#5F3388 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) | #06478B | 0.114 |
| Deuteranopia (no green cones) | #204986 | 0.102 |
| Tritanopia (no blue cones) | #584458 | 0.101 |
| Achromatopsia (no color) | #494949 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F3388
#5F3388
oklch(42% 0.138 305)
- #405600
#405600
oklch(41.9% 0.105 124.9)
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 #5F3388, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.056
- Twilight #4E518B ΔE 0.078
- Chrysanthemum #560BAD ΔE 0.085
- Purple #800080 ΔE 0.086
- Indigo #4B0082 ΔE 0.091
- Dusk #4E5481 ΔE 0.091
Use #5F3388 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.