#37543F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.6% 0.049 152.5), rgb(55, 84, 63).
Aa
White text reads best on this color (8.39:1).
About this color
#37543F is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.049 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.036 away. White text reads best on it, at 8.39:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.049) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #37543F |
| RGB | rgb(55, 84, 63) |
| HSL | hsl(137, 21%, 27%) |
| OKLCH | oklch(41.6% 0.049 152.5) |
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 #37543F | 8.39:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #37543F | 2.50:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #37543F text on white | 8.39:1 | AAA | Lc 88.9 | Fine for body text |
| #37543F 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
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D2DCD4
oklch(88.5% 0.015 151.7)
-
Step 300
300
#B3C6B8
oklch(80.8% 0.028 153.8)
-
Step 400
400
#8CA993
oklch(70.6% 0.045 152.4)
-
Step 500
500
#6F9478
oklch(63.1% 0.059 151.9)
-
Step 600
600
#567E61
oklch(55.5% 0.063 152.6)
-
Step 700
700
#466B50
oklch(49.2% 0.06 152.2)
-
Step 800
800 (this color)
#37543F
oklch(41.6% 0.049 152.5)
-
Step 900
900
#324838
oklch(37.8% 0.039 152.8)
-
Step 950
950
#1D2A21
oklch(27% 0.024 154.3)
#37543F 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) | #544F3E | 0.044 |
| Deuteranopia (no green cones) | #4F4C40 | 0.042 |
| Tritanopia (no blue cones) | #32534E | 0.026 |
| Achromatopsia (no color) | #4D4D4D | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37543F
#37543F
oklch(41.6% 0.049 152.5)
- #5C4258
#5C4258
oklch(41.6% 0.049 331.8)
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 #37543F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.036
- Pine #2B5D34 ΔE 0.040
- Dark Blue Green #005249 ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.051
- Spruce #0A5F38 ΔE 0.051
- Deep Teal #00555A ΔE 0.053
- Dark Teal #014D4E ΔE 0.057
- Navy Green #35530A ΔE 0.061
Use #37543F 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.