#51386D
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.091 304.3), rgb(81, 56, 109).
Aa
White text reads best on this color (9.82:1).
About this color
#51386D is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.091 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 0.052 away. White text reads best on it, at 9.82:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.82:1 |
Values
| HEX | #51386D |
| RGB | rgb(81, 56, 109) |
| HSL | hsl(268, 32%, 32%) |
| OKLCH | oklch(39.4% 0.091 304.3) |
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 #51386D | 9.82:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #51386D | 2.13:1 | Fails | Lc 11.3 | Not readable |
| #51386D text on white | 9.82:1 | AAA | Lc 92.6 | Preferred for body text |
| #51386D text on black | 2.13:1 | 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
#EDE7F5
oklch(93.7% 0.02 305.3)
-
Step 200
200
#DED3EE
oklch(88.4% 0.038 304)
-
Step 300
300
#CAB6E5
oklch(80.9% 0.069 304.3)
-
Step 400
400
#B08FD8
oklch(70.7% 0.11 304.5)
-
Step 500
500
#9C72CD
oklch(63.1% 0.139 304)
-
Step 600
600
#8758BA
oklch(55.5% 0.152 304)
-
Step 700
700
#7348A0
oklch(49.2% 0.14 304.3)
-
Step 800
800
#5D3B82
oklch(42.6% 0.117 304)
-
Step 900
900 (this color)
#51386D
oklch(39.4% 0.091 304.3)
-
Step 950
950
#2D1F3D
oklch(27.1% 0.057 304.4)
#51386D 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) | #2A436F | 0.065 |
| Deuteranopia (no green cones) | #30436C | 0.059 |
| Tritanopia (no blue cones) | #4C414D | 0.068 |
| Achromatopsia (no color) | #434343 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51386D
#51386D
oklch(39.4% 0.091 304.3)
- #3C4E0B
#3C4E0B
oklch(39.5% 0.091 124.2)
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 #51386D, 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 0.077
- Dusk #4E5481 ΔE 0.079
- Dark Grey Blue #29465B ΔE 0.082
- Rebecca Purple #663399 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.086
- Dusty Grape #545775 ΔE 0.088
Use #51386D 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.