#51375D
Closest named color: Purple Brown (#673A3F). oklch(38.3% 0.07 314.6), rgb(81, 55, 93).
Aa
White text reads best on this color (10.22:1).
About this color
#51375D is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.070 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.070 away. White text reads best on it, at 10.22:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #51375D |
| RGB | rgb(81, 55, 93) |
| HSL | hsl(281, 26%, 29%) |
| OKLCH | oklch(38.3% 0.07 314.6) |
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 #51375D | 10.22:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #51375D | 2.05:1 | Fails | Lc 10.3 | Not readable |
| #51375D text on white | 10.22:1 | AAA | Lc 93.6 | Preferred for body text |
| #51375D text on black | 2.05:1 | Fails | Lc -8.9 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F1
oklch(93.6% 0.015 316)
-
Step 200
200
#E0D4E7
oklch(88.5% 0.029 313.3)
-
Step 300
300
#CEB7D9
oklch(81% 0.053 314.9)
-
Step 400
400
#B491C5
oklch(70.7% 0.084 314.5)
-
Step 500
500
#A275B7
oklch(63.2% 0.108 314.6)
-
Step 600
600
#8D5CA2
oklch(55.5% 0.118 315.2)
-
Step 700
700
#774C8B
oklch(49.1% 0.108 314.4)
-
Step 800
800
#613E71
oklch(42.6% 0.091 314.6)
-
Step 900
900 (this color)
#51375D
oklch(38.3% 0.07 314.6)
-
Step 950
950
#2F2036
oklch(27.2% 0.045 314.6)
#51375D 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) | #313F5E | 0.056 |
| Deuteranopia (no green cones) | #37425C | 0.052 |
| Tritanopia (no blue cones) | #503C45 | 0.048 |
| Achromatopsia (no color) | #414141 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51375D
#51375D
oklch(38.3% 0.07 314.6)
- #334B23
#334B23
oklch(38.2% 0.07 134.1)
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 #51375D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.070
- Charcoal Grey #3C4142 ΔE 0.073
- Dark Grey Blue #29465B ΔE 0.074
- Onyx #343A40 ΔE 0.076
- Grape Purple #5D1451 ΔE 0.078
- Dark Slate Blue #483D8B ΔE 0.078
- Charcoal #264653 ΔE 0.082
- Prussian Blue #1D3557 ΔE 0.086
Use #51375D 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.