#475151
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.6% 0.013 196.7), rgb(71, 81, 81).
Aa
White text reads best on this color (8.19:1).
About this color
#475151 is a dark close to neutral grey. In OKLCH its lightness is 43%, its chroma 0.013. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.034 away. White text reads best on it, at 8.19:1.
| Hue family | Neutrals |
| Lightness | dark (43%) |
| Chroma | close to neutral grey (0.013) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #475151 |
| RGB | rgb(71, 81, 81) |
| HSL | hsl(180, 7%, 30%) |
| OKLCH | oklch(42.6% 0.013 196.7) |
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 #475151 | 8.19:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #475151 | 2.56:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #475151 text on white | 8.19:1 | AAA | Lc 88.3 | Fine for body text |
| #475151 text on black | 2.56:1 | Fails | Lc -13.8 | 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
#F5F6F6
oklch(97.2% 0.001 197.1)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DADA
oklch(88.5% 0.004 197.1)
-
Step 300
300
#BBC2C2
oklch(80.9% 0.008 197)
-
Step 400
400
#98A3A3
oklch(70.7% 0.013 196.9)
-
Step 500
500
#7F8C8C
oklch(63% 0.015 196.8)
-
Step 600
600
#697676
oklch(55.5% 0.016 196.7)
-
Step 700
700
#576464
oklch(49.2% 0.016 196.6)
-
Step 800
800 (this color)
#475151
oklch(42.6% 0.013 196.7)
-
Step 900
900
#3C4343
oklch(37.6% 0.009 196.8)
-
Step 950
950
#232727
oklch(26.9% 0.006 196.8)
#475151 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) | #505051 | 0.014 |
| Deuteranopia (no green cones) | #4E4E51 | 0.014 |
| Tritanopia (no blue cones) | #445251 | 0.005 |
| Achromatopsia (no color) | #4F4F4F | 0.013 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #475151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.055
- Deep Teal #00555A ΔE 0.059
- YInMn Blue #415A77 ΔE 0.061
- Charcoal #264653 ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.062
- Dusty Grape #545775 ΔE 0.063
- Dark Green Blue #1F6357 ΔE 0.064
Use #475151 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.