#51404F
Closest named color: Charcoal Grey (#3C4142). oklch(39.5% 0.033 330.1), rgb(81, 64, 79).
Aa
White text reads best on this color (9.56:1).
About this color
#51404F is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.033 and its hue 330°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.044 away. White text reads best on it, at 9.56:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #51404F |
| RGB | rgb(81, 64, 79) |
| HSL | hsl(307, 12%, 28%) |
| OKLCH | oklch(39.5% 0.033 330.1) |
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 #51404F | 9.56:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #51404F | 2.19:1 | Fails | Lc 11.8 | Not readable |
| #51404F text on white | 9.56:1 | AAA | Lc 92.1 | Preferred for body text |
| #51404F text on black | 2.19:1 | Fails | Lc -10.3 | 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#EDE8EC
oklch(93.6% 0.008 332.1)
-
Step 200
200
#DFD6DD
oklch(88.5% 0.014 333.1)
-
Step 300
300
#CABBC8
oklch(80.8% 0.024 330.1)
-
Step 400
400
#B098AD
oklch(70.8% 0.041 330.1)
-
Step 500
500
#9C7F98
oklch(63.2% 0.05 330.8)
-
Step 600
600
#866883
oklch(55.6% 0.055 329.6)
-
Step 700
700
#72566F
oklch(49.1% 0.052 330)
-
Step 800
800
#5D475A
oklch(42.8% 0.042 330.9)
-
Step 900
900 (this color)
#51404F
oklch(39.5% 0.033 330.1)
-
Step 950
950
#2D232B
oklch(27.1% 0.021 333.1)
#51404F 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) | #3F4450 | 0.031 |
| Deuteranopia (no green cones) | #43464E | 0.029 |
| Tritanopia (no blue cones) | #524145 | 0.018 |
| Achromatopsia (no color) | #454545 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51404F
#51404F
oklch(39.5% 0.033 330.1)
- #3A4C3D
#3A4C3D
oklch(39.6% 0.034 149.6)
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 #51404F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.044
- Purple Brown #673A3F ΔE 0.047
- Onyx #343A40 ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.061
- Charcoal #264653 ΔE 0.064
- Dark Slate Gray #2F4F4F ΔE 0.066
- Brownish Purple #76424E ΔE 0.071
- Dusty Grape #545775 ΔE 0.080
Use #51404F 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.