#51376D
Closest named color: Dark Slate Blue (#483D8B). oklch(39.2% 0.093 304.7), rgb(81, 55, 109).
Aa
White text reads best on this color (9.91:1).
About this color
#51376D is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.093 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 0.053 away. White text reads best on it, at 9.91:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #51376D |
| RGB | rgb(81, 55, 109) |
| HSL | hsl(269, 33%, 32%) |
| OKLCH | oklch(39.2% 0.093 304.7) |
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 #51376D | 9.91:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #51376D | 2.11:1 | Fails | Lc 11.1 | Not readable |
| #51376D text on white | 9.91:1 | AAA | Lc 92.9 | Preferred for body text |
| #51376D text on black | 2.11:1 | Fails | Lc -9.6 | 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
#DFD3EE
oklch(88.5% 0.039 305.6)
-
Step 300
300
#CBB6E5
oklch(80.9% 0.069 305.2)
-
Step 400
400
#B08FD8
oklch(70.7% 0.11 304.5)
-
Step 500
500
#9D71CE
oklch(63.1% 0.142 304.5)
-
Step 600
600
#8857BB
oklch(55.6% 0.155 304.5)
-
Step 700
700
#7447A1
oklch(49.2% 0.143 304.8)
-
Step 800
800
#5E3B82
oklch(42.7% 0.118 304.7)
-
Step 900
900 (this color)
#51376D
oklch(39.2% 0.093 304.7)
-
Step 950
950
#2D1E3D
oklch(26.9% 0.059 305.1)
#51376D 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) | #28426F | 0.067 |
| Deuteranopia (no green cones) | #2F436C | 0.061 |
| Tritanopia (no blue cones) | #4C404D | 0.068 |
| Achromatopsia (no color) | #434343 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51376D
#51376D
oklch(39.2% 0.093 304.7)
- #3B4D08
#3B4D08
oklch(39.1% 0.092 124.1)
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 #51376D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Blueberry #464196 ΔE 0.072
- Twilight #4E518B ΔE 0.079
- Dusk #4E5481 ΔE 0.081
- Rebecca Purple #663399 ΔE 0.083
- Grape Purple #5D1451 ΔE 0.084
- Dark Grey Blue #29465B ΔE 0.084
- Twilight Blue #0A437A ΔE 0.090
Use #51376D 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.