#51503E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.7% 0.028 104.9), rgb(81, 80, 62).
Aa
White text reads best on this color (8.18:1).
About this color
#51503E is a dark close to neutral grey. In OKLCH its lightness is 43%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.053 away. White text reads best on it, at 8.18:1.
| Hue family | Neutrals |
| Lightness | dark (43%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #51503E |
| RGB | rgb(81, 80, 62) |
| HSL | hsl(57, 13%, 28%) |
| OKLCH | oklch(42.7% 0.028 104.9) |
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 #51503E | 8.18:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #51503E | 2.56:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #51503E text on white | 8.18:1 | AAA | Lc 88.3 | Fine for body text |
| #51503E text on black | 2.56:1 | Fails | Lc -13.9 | 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
#F5F5F4
oklch(97% 0.001 106.4)
-
Step 100
100
#EAEAE6
oklch(93.6% 0.005 106.5)
-
Step 200
200
#DAD9D3
oklch(88.4% 0.008 98.9)
-
Step 300
300
#C2C1B5
oklch(80.8% 0.017 102.9)
-
Step 400
400
#A3A28F
oklch(70.8% 0.027 104.6)
-
Step 500
500
#8C8B73
oklch(63.1% 0.035 105.4)
-
Step 600
600
#76755C
oklch(55.6% 0.037 105.6)
-
Step 700
700
#63624B
oklch(49% 0.035 105.5)
-
Step 800
800 (this color)
#51503E
oklch(42.7% 0.028 104.9)
-
Step 900
900
#434235
oklch(37.6% 0.021 103.7)
-
Step 950
950
#27271F
oklch(27% 0.014 107.3)
#51503E 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) | #534F3D | 0.004 |
| Deuteranopia (no green cones) | #54503F | 0.005 |
| Tritanopia (no blue cones) | #544E4B | 0.025 |
| Achromatopsia (no color) | #4F4F4F | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51503E
#51503E
oklch(42.7% 0.028 104.9)
- #4D4D5E
#4D4D5E
oklch(42.7% 0.028 285.2)
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 #51503E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.053
- Mud Brown #60460F ΔE 0.054
- Green Brown #544E03 ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.064
- Olive Brown #645403 ΔE 0.067
- Pine #2B5D34 ΔE 0.068
- Dark Green Blue #1F6357 ΔE 0.073
- Army Green #4B5D16 ΔE 0.073
Use #51503E 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.