#5B4780
Closest named color: Twilight (#4E518B). oklch(44.5% 0.093 298.7), rgb(91, 71, 128).
Aa
White text reads best on this color (7.90:1).
About this color
#5B4780 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.093 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.034 away. White text reads best on it, at 7.90:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #5B4780 |
| RGB | rgb(91, 71, 128) |
| HSL | hsl(261, 29%, 39%) |
| OKLCH | oklch(44.5% 0.093 298.7) |
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 #5B4780 | 7.90:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #5B4780 | 2.65:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #5B4780 text on white | 7.90:1 | AAA | Lc 87.3 | Fine for body text |
| #5B4780 text on black | 2.65:1 | Fails | Lc -14.8 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD5EB
oklch(88.4% 0.031 298.2)
-
Step 300
300
#C5B9E0
oklch(80.8% 0.056 299.2)
-
Step 400
400
#A895D0
oklch(70.8% 0.087 298.9)
-
Step 500
500
#937AC3
oklch(63.2% 0.11 299)
-
Step 600
600
#7D61B0
oklch(55.5% 0.122 298.7)
-
Step 700
700
#6A5097
oklch(49.1% 0.113 299.1)
-
Step 800
800 (this color)
#5B4780
oklch(44.5% 0.093 298.7)
-
Step 900
900
#473863
oklch(37.7% 0.074 298.9)
-
Step 950
950
#29213A
oklch(26.9% 0.047 297.9)
#5B4780 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) | #375182 | 0.057 |
| Deuteranopia (no green cones) | #3B517F | 0.054 |
| Tritanopia (no blue cones) | #54515D | 0.073 |
| Achromatopsia (no color) | #515151 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4780
#5B4780
oklch(44.5% 0.093 298.7)
- #4F5B14
#4F5B14
oklch(44.6% 0.094 118.8)
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 #5B4780, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.034
- Dusk #4E5481 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.050
- Dusty Grape #545775 ΔE 0.054
- Blueberry #464196 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.068
- YInMn Blue #415A77 ΔE 0.069
Use #5B4780 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.