#40523D
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.7% 0.041 141.1), rgb(64, 82, 61).
Aa
White text reads best on this color (8.42:1).
About this color
#40523D is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.041 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.039 away. White text reads best on it, at 8.42:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #40523D |
| RGB | rgb(64, 82, 61) |
| HSL | hsl(111, 15%, 28%) |
| OKLCH | oklch(41.7% 0.041 141.1) |
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 #40523D | 8.42:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #40523D | 2.49:1 | Fails | Lc 15.0 | Not readable |
| #40523D text on white | 8.42:1 | AAA | Lc 89.0 | Fine for body text |
| #40523D text on black | 2.49:1 | Fails | Lc -13.2 | 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
#E7EBE7
oklch(93.6% 0.007 145.5)
-
Step 200
200
#D4DBD3
oklch(88.4% 0.013 141.8)
-
Step 300
300
#B8C5B6
oklch(80.9% 0.025 141.5)
-
Step 400
400
#94A791
oklch(70.7% 0.038 141.4)
-
Step 500
500
#7A9176
oklch(63.1% 0.048 141)
-
Step 600
600
#627B5E
oklch(55.5% 0.053 141.2)
-
Step 700
700
#51684E
oklch(49.1% 0.049 141.8)
-
Step 800
800 (this color)
#40523D
oklch(41.7% 0.041 141.1)
-
Step 900
900
#384636
oklch(37.7% 0.032 141.6)
-
Step 950
950
#212920
oklch(27% 0.02 142)
#40523D 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) | #534E3C | 0.031 |
| Deuteranopia (no green cones) | #504D3E | 0.029 |
| Tritanopia (no blue cones) | #3F514C | 0.025 |
| Achromatopsia (no color) | #4D4D4D | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40523D
#40523D
oklch(41.7% 0.041 141.1)
- #57455A
#57455A
oklch(41.7% 0.041 321.5)
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 #40523D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.039
- Pine #2B5D34 ΔE 0.048
- Dark Blue Green #005249 ΔE 0.053
- Dark Green Blue #1F6357 ΔE 0.059
- Green Brown #544E03 ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.060
- Deep Teal #00555A ΔE 0.062
- Spruce #0A5F38 ΔE 0.062
Use #40523D 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.