#51386E
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.092 303.8), rgb(81, 56, 110).
Aa
White text reads best on this color (9.80:1).
About this color
#51386E is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.092 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 9.80:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #51386E |
| RGB | rgb(81, 56, 110) |
| HSL | hsl(268, 33%, 33%) |
| OKLCH | oklch(39.4% 0.092 303.8) |
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 #51386E | 9.80:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #51386E | 2.14:1 | Fails | Lc 11.3 | Not readable |
| #51386E text on white | 9.80:1 | AAA | Lc 92.6 | Preferred for body text |
| #51386E text on black | 2.14:1 | Fails | Lc -9.8 | 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 900.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DED3EE
oklch(88.4% 0.038 304)
-
Step 300
300
#CAB6E6
oklch(80.9% 0.07 303.8)
-
Step 400
400
#AF8FD9
oklch(70.7% 0.111 303.6)
-
Step 500
500
#9C71CE
oklch(63% 0.141 304)
-
Step 600
600
#8758BB
oklch(55.6% 0.153 303.8)
-
Step 700
700
#7347A1
oklch(49.1% 0.143 304.2)
-
Step 800
800
#5D3B83
oklch(42.7% 0.119 303.6)
-
Step 900
900 (this color)
#51386E
oklch(39.4% 0.092 303.8)
-
Step 950
950
#2D1E3D
oklch(26.9% 0.059 305.1)
#51386E 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) | #294370 | 0.066 |
| Deuteranopia (no green cones) | #2F446D | 0.061 |
| Tritanopia (no blue cones) | #4C414D | 0.069 |
| Achromatopsia (no color) | #444444 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51386E
#51386E
oklch(39.4% 0.092 303.8)
- #3C4E09
#3C4E09
oklch(39.5% 0.092 124)
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 #51386E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.070
- Twilight #4E518B ΔE 0.076
- Dusk #4E5481 ΔE 0.078
- Rebecca Purple #663399 ΔE 0.082
- Dark Grey Blue #29465B ΔE 0.083
- Grape Purple #5D1451 ΔE 0.087
- Dusty Grape #545775 ΔE 0.088
Use #51386E 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.