#51376C
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.091 305.2), rgb(81, 55, 108).
Aa
White text reads best on this color (9.93:1).
About this color
#51376C is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.091 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 0.054 away. White text reads best on it, at 9.93:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #51376C |
| RGB | rgb(81, 55, 108) |
| HSL | hsl(269, 33%, 32%) |
| OKLCH | oklch(39.1% 0.091 305.2) |
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 #51376C | 9.93:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #51376C | 2.11:1 | Fails | Lc 11.0 | Not readable |
| #51376C text on white | 9.93:1 | AAA | Lc 92.9 | Preferred for body text |
| #51376C 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
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
#B18FD7
oklch(70.8% 0.109 305.4)
-
Step 500
500
#9E71CC
oklch(63.1% 0.14 305.6)
-
Step 600
600
#8958B9
oklch(55.7% 0.151 305.4)
-
Step 700
700
#7447A0
oklch(49.1% 0.142 305.1)
-
Step 800
800
#5E3B81
oklch(42.7% 0.116 305.1)
-
Step 900
900 (this color)
#51376C
oklch(39.1% 0.091 305.2)
-
Step 950
950
#2D1E3D
oklch(26.9% 0.059 305.1)
#51376C 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) | #29426E | 0.066 |
| Deuteranopia (no green cones) | #2F436B | 0.061 |
| Tritanopia (no blue cones) | #4D404C | 0.068 |
| Achromatopsia (no color) | #434343 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51376C
#51376C
oklch(39.1% 0.091 305.2)
- #3A4D0B
#3A4D0B
oklch(39% 0.091 125)
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 #51376C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.073
- Twilight #4E518B ΔE 0.080
- Dusk #4E5481 ΔE 0.082
- Dark Grey Blue #29465B ΔE 0.083
- Grape Purple #5D1451 ΔE 0.083
- Rebecca Purple #663399 ΔE 0.085
- Twilight Blue #0A437A ΔE 0.090
Use #51376C 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.