#51374B
Closest named color: Purple Brown (#673A3F). oklch(37.4% 0.048 335.1), rgb(81, 55, 75).
Aa
White text reads best on this color (10.51:1).
About this color
#51374B is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.048 and its hue 335°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.050 away. White text reads best on it, at 10.51:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #51374B |
| RGB | rgb(81, 55, 75) |
| HSL | hsl(314, 19%, 27%) |
| OKLCH | oklch(37.4% 0.048 335.1) |
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 #51374B | 10.51:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #51374B | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #51374B text on white | 10.51:1 | AAA | Lc 94.3 | Preferred for body text |
| #51374B text on black | 1.99:1 | Fails | Lc -8.2 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7ED
oklch(93.6% 0.012 334.1)
-
Step 200
200
#E2D4DE
oklch(88.4% 0.02 335.7)
-
Step 300
300
#D0B8CA
oklch(80.8% 0.037 334.6)
-
Step 400
400
#B893AF
oklch(70.6% 0.059 334.9)
-
Step 500
500
#A6799B
oklch(63.2% 0.073 335.5)
-
Step 600
600
#916186
oklch(55.6% 0.081 335.3)
-
Step 700
700
#7B5072
oklch(49.1% 0.075 334.5)
-
Step 800
800
#64425C
oklch(42.7% 0.061 335.5)
-
Step 900
900 (this color)
#51374B
oklch(37.4% 0.048 335.1)
-
Step 950
950
#30212C
oklch(27% 0.03 336.3)
#51374B 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) | #373D4C | 0.047 |
| Deuteranopia (no green cones) | #3D414A | 0.045 |
| Tritanopia (no blue cones) | #54383E | 0.024 |
| Achromatopsia (no color) | #3F3F3F | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51374B
#51374B
oklch(37.4% 0.048 335.1)
- #2B4936
#2B4936
oklch(37.6% 0.049 155.5)
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 #51374B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.053
- Onyx #343A40 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.072
- Charcoal #264653 ΔE 0.075
- Gunmetal #293241 ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.081
Use #51374B 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.