#5B336D
Closest named color: Dark Slate Blue (#483D8B). oklch(39.7% 0.104 314.4), rgb(91, 51, 109).
Aa
White text reads best on this color (9.81:1).
About this color
#5B336D is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.104 and its hue 314°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 9.81:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #5B336D |
| RGB | rgb(91, 51, 109) |
| HSL | hsl(281, 36%, 31%) |
| OKLCH | oklch(39.7% 0.104 314.4) |
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 #5B336D | 9.81:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #5B336D | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #5B336D text on white | 9.81:1 | AAA | Lc 92.5 | Preferred for body text |
| #5B336D text on black | 2.13:1 | Fails | Lc -9.9 | 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 900.
-
Step 50
50
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F5
oklch(93.7% 0.023 314.7)
-
Step 200
200
#E4D1ED
oklch(88.5% 0.043 315)
-
Step 300
300
#D3B2E4
oklch(80.9% 0.078 314.1)
-
Step 400
400
#BD88D6
oklch(70.7% 0.124 314.5)
-
Step 500
500
#AC68CB
oklch(63.1% 0.158 314.4)
-
Step 600
600
#974CB8
oklch(55.5% 0.174 314.2)
-
Step 700
700
#813D9E
oklch(49.1% 0.16 314.5)
-
Step 800
800
#693380
oklch(42.7% 0.133 314.6)
-
Step 900
900 (this color)
#5B336D
oklch(39.7% 0.104 314.4)
-
Step 950
950
#321B3C
oklch(26.9% 0.066 314.9)
#5B336D 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) | #26416F | 0.090 |
| Deuteranopia (no green cones) | #32456B | 0.081 |
| Tritanopia (no blue cones) | #5A3C4B | 0.069 |
| Achromatopsia (no color) | #434343 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B336D
#5B336D
oklch(39.7% 0.104 314.4)
- #2D520E
#2D520E
oklch(39.6% 0.104 134.3)
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 #5B336D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Grape Purple #5D1451 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.075
- Blueberry #464196 ΔE 0.080
- Rich Purple #720058 ΔE 0.086
- Twilight #4E518B ΔE 0.087
- Velvet #750851 ΔE 0.088
- Purple Brown #673A3F ΔE 0.090
Use #5B336D 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.