#3F5045
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.3% 0.028 156.6), rgb(63, 80, 69).
Aa
White text reads best on this color (8.58:1).
About this color
#3F5045 is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.58:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.44:1 |
| White text | 8.58:1 |
Values
| HEX | #3F5045 |
| RGB | rgb(63, 80, 69) |
| HSL | hsl(141, 12%, 28%) |
| OKLCH | oklch(41.3% 0.028 156.6) |
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 #3F5045 | 8.58:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #3F5045 | 2.44:1 | Fails | Lc 14.5 | Not readable |
| #3F5045 text on white | 8.58:1 | AAA | Lc 89.5 | Fine for body text |
| #3F5045 text on black | 2.44:1 | Fails | Lc -12.7 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D4DBD7
oklch(88.5% 0.009 161.3)
-
Step 300
300
#B9C4BC
oklch(80.9% 0.016 154.4)
-
Step 400
400
#94A69A
oklch(70.8% 0.027 156.5)
-
Step 500
500
#7A9081
oklch(63.2% 0.034 155.5)
-
Step 600
600
#627A6B
oklch(55.6% 0.036 157.6)
-
Step 700
700
#516759
oklch(49.1% 0.035 157)
-
Step 800
800 (this color)
#3F5045
oklch(41.3% 0.028 156.6)
-
Step 900
900
#38453D
oklch(37.6% 0.022 158.2)
-
Step 950
950
#212924
oklch(27.1% 0.015 157.9)
#3F5045 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) | #504D44 | 0.027 |
| Deuteranopia (no green cones) | #4D4B46 | 0.026 |
| Tritanopia (no blue cones) | #3C504D | 0.013 |
| Achromatopsia (no color) | #4C4C4C | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5045
#3F5045
oklch(41.3% 0.028 156.6)
- #564651
#564651
oklch(41.5% 0.028 337.6)
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 #3F5045, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.051
- Deep Teal #00555A ΔE 0.054
- Dark Teal #014D4E ΔE 0.056
- Charcoal #264653 ΔE 0.057
- Dark Green Blue #1F6357 ΔE 0.061
- Pine #2B5D34 ΔE 0.061
Use #3F5045 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.