#42523B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.042 136.3), rgb(66, 82, 59).
Aa
White text reads best on this color (8.39:1).
About this color
#42523B is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.042 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.043 away. White text reads best on it, at 8.39:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #42523B |
| RGB | rgb(66, 82, 59) |
| HSL | hsl(102, 16%, 28%) |
| OKLCH | oklch(41.8% 0.042 136.3) |
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 #42523B | 8.39:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #42523B | 2.50:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #42523B text on white | 8.39:1 | AAA | Lc 88.9 | Fine for body text |
| #42523B text on black | 2.50:1 | Fails | Lc -13.3 | 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 800.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE6
oklch(93.6% 0.007 132.4)
-
Step 200
200
#D5DBD2
oklch(88.4% 0.014 134.9)
-
Step 300
300
#BAC5B5
oklch(81% 0.025 135.7)
-
Step 400
400
#96A78E
oklch(70.8% 0.04 135.6)
-
Step 500
500
#7C9173
oklch(63.2% 0.05 136.3)
-
Step 600
600
#657B5B
oklch(55.6% 0.055 136)
-
Step 700
700
#54684B
oklch(49.2% 0.051 136.1)
-
Step 800
800 (this color)
#42523B
oklch(41.8% 0.042 136.3)
-
Step 900
900
#3A4634
oklch(37.8% 0.034 135.3)
-
Step 950
950
#22291F
oklch(27.1% 0.021 136.3)
#42523B 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) | #544E3A | 0.029 |
| Deuteranopia (no green cones) | #514D3C | 0.028 |
| Tritanopia (no blue cones) | #42504C | 0.030 |
| Achromatopsia (no color) | #4D4D4D | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42523B
#42523B
oklch(41.8% 0.042 136.3)
- #56465C
#56465C
oklch(41.9% 0.041 316.7)
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 #42523B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.043
- Pine #2B5D34 ΔE 0.048
- Green Brown #544E03 ΔE 0.055
- Dark Blue Green #005249 ΔE 0.057
- Dark Green Blue #1F6357 ΔE 0.060
- Spruce #0A5F38 ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.062
- Navy Green #35530A ΔE 0.062
Use #42523B 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.