#5B4583
Closest named color: Twilight (#4E518B). oklch(44.3% 0.101 298.6), rgb(91, 69, 131).
Aa
White text reads best on this color (8.00:1).
About this color
#5B4583 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.101 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 8.00:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #5B4583 |
| RGB | rgb(91, 69, 131) |
| HSL | hsl(261, 31%, 39%) |
| OKLCH | oklch(44.3% 0.101 298.6) |
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 #5B4583 | 8.00:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #5B4583 | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #5B4583 text on white | 8.00:1 | AAA | Lc 87.6 | Fine for body text |
| #5B4583 text on black | 2.62:1 | Fails | Lc -14.5 | 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 800.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DBD5EC
oklch(88.5% 0.032 297.7)
-
Step 300
300
#C5B9E2
oklch(80.9% 0.058 298.5)
-
Step 400
400
#A894D4
oklch(70.8% 0.094 298.3)
-
Step 500
500
#9378C8
oklch(63.1% 0.12 298.4)
-
Step 600
600
#7E5FB5
oklch(55.5% 0.132 298.7)
-
Step 700
700
#6A4E9C
oklch(49% 0.123 298.3)
-
Step 800
800 (this color)
#5B4583
oklch(44.3% 0.101 298.6)
-
Step 900
900
#473765
oklch(37.6% 0.078 298.6)
-
Step 950
950
#2A213B
oklch(27.1% 0.048 299.1)
#5B4583 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) | #325185 | 0.065 |
| Deuteranopia (no green cones) | #375081 | 0.060 |
| Tritanopia (no blue cones) | #53505D | 0.080 |
| Achromatopsia (no color) | #505050 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4583
#5B4583
oklch(44.3% 0.101 298.6)
- #4E5A05
#4E5A05
oklch(44.2% 0.101 118.4)
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 #5B4583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.044
- Dusk #4E5481 ΔE 0.046
- Blueberry #464196 ΔE 0.050
- Rebecca Purple #663399 ΔE 0.060
- Dusty Grape #545775 ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.071
- Dusky Blue #475F94 ΔE 0.074
Use #5B4583 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.