#51366E
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.096 304.6), rgb(81, 54, 110).
Aa
White text reads best on this color (9.98:1).
About this color
#51366E is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.096 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.052 away. White text reads best on it, at 9.98:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #51366E |
| RGB | rgb(81, 54, 110) |
| HSL | hsl(269, 34%, 32%) |
| OKLCH | oklch(39.1% 0.096 304.6) |
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 #51366E | 9.98:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #51366E | 2.10:1 | Fails | Lc 10.9 | Not readable |
| #51366E text on white | 9.98:1 | AAA | Lc 93.0 | Preferred for body text |
| #51366E text on black | 2.10:1 | Fails | Lc -9.5 | 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 900.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE7F5
oklch(93.7% 0.02 305.3)
-
Step 200
200
#DFD3EF
oklch(88.5% 0.04 304.9)
-
Step 300
300
#CBB6E7
oklch(81% 0.071 304.3)
-
Step 400
400
#B18EDA
oklch(70.7% 0.114 304.8)
-
Step 500
500
#9E70D0
oklch(63.1% 0.146 304.7)
-
Step 600
600
#8956BD
oklch(55.6% 0.159 304.6)
-
Step 700
700
#7445A3
oklch(49% 0.149 304.6)
-
Step 800
800
#5F3A84
oklch(42.8% 0.122 304.9)
-
Step 900
900 (this color)
#51366E
oklch(39.1% 0.096 304.6)
-
Step 950
950
#2D1E3E
oklch(27% 0.06 304.3)
#51366E 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) | #264270 | 0.070 |
| Deuteranopia (no green cones) | #2D426D | 0.064 |
| Tritanopia (no blue cones) | #4C404D | 0.071 |
| Achromatopsia (no color) | #424242 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51366E
#51366E
oklch(39.1% 0.096 304.6)
- #3A4D03
#3A4D03
oklch(39% 0.095 124.4)
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 #51366E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Blueberry #464196 ΔE 0.071
- Twilight #4E518B ΔE 0.080
- Rebecca Purple #663399 ΔE 0.081
- Grape Purple #5D1451 ΔE 0.083
- Dusk #4E5481 ΔE 0.083
- Dark Grey Blue #29465B ΔE 0.086
- Twilight Blue #0A437A ΔE 0.091
Use #51366E 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.