#51455C
Closest named color: Charcoal Grey (#3C4142). oklch(41.2% 0.041 308.3), rgb(81, 69, 92).
Aa
White text reads best on this color (8.91:1).
About this color
#51455C is a dark, muted purple. In OKLCH its lightness is 41%, its chroma 0.041 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.058 away. White text reads best on it, at 8.91:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #51455C |
| RGB | rgb(81, 69, 92) |
| HSL | hsl(271, 14%, 32%) |
| OKLCH | oklch(41.2% 0.041 308.3) |
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 #51455C | 8.91:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #51455C | 2.35:1 | Fails | Lc 13.5 | Not readable |
| #51455C text on white | 8.91:1 | AAA | Lc 90.4 | Preferred for body text |
| #51455C text on black | 2.35:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DBD7E0
oklch(88.5% 0.013 306)
-
Step 300
300
#C5BDCD
oklch(81% 0.024 308.1)
-
Step 400
400
#A79BB3
oklch(70.8% 0.037 307.9)
-
Step 500
500
#9282A0
oklch(63.1% 0.048 309)
-
Step 600
600
#7C6B8B
oklch(55.5% 0.053 308.8)
-
Step 700
700
#695976
oklch(49.1% 0.049 309.6)
-
Step 800
800 (this color)
#51455C
oklch(41.2% 0.041 308.3)
-
Step 900
900
#463D4F
oklch(37.6% 0.032 307.5)
-
Step 950
950
#29242E
oklch(27% 0.02 307.7)
#51455C 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) | #41495D | 0.027 |
| Deuteranopia (no green cones) | #444A5B | 0.025 |
| Tritanopia (no blue cones) | #50484D | 0.030 |
| Achromatopsia (no color) | #4A4A4A | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51455C
#51455C
oklch(41.2% 0.041 308.3)
- #444F37
#444F37
oklch(41.1% 0.041 128.1)
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 #51455C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.058
- Dusty Grape #545775 ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.059
- Purple Brown #673A3F ΔE 0.060
- Dark Slate Gray #2F4F4F ΔE 0.066
- Dusk #4E5481 ΔE 0.066
- Charcoal #264653 ΔE 0.066
- YInMn Blue #415A77 ΔE 0.068
Use #51455C 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.