#37573F
Closest named color: Pine (#2B5D34). oklch(42.4% 0.055 151.4), rgb(55, 87, 63).
Aa
White text reads best on this color (8.08:1).
About this color
#37573F is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.055 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pine (#2B5D34), ΔE 0.032 away. White text reads best on it, at 8.08:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.055) |
| Temperature | in between |
| Nearest name | Pine (#2B5D34) |
| Black text | 2.59:1 |
| White text | 8.08:1 |
Values
| HEX | #37573F |
| RGB | rgb(55, 87, 63) |
| HSL | hsl(135, 23%, 28%) |
| OKLCH | oklch(42.4% 0.055 151.4) |
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 #37573F | 8.08:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #37573F | 2.59:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #37573F text on white | 8.08:1 | AAA | Lc 87.9 | Fine for body text |
| #37573F text on black | 2.59:1 | Fails | Lc -14.2 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6ECE7
oklch(93.7% 0.009 150.7)
-
Step 200
200
#D1DDD3
oklch(88.6% 0.019 150.5)
-
Step 300
300
#B2C7B6
oklch(80.9% 0.033 151.1)
-
Step 400
400
#8AAA91
oklch(70.7% 0.05 151.5)
-
Step 500
500
#6C9576
oklch(63.1% 0.065 151.8)
-
Step 600
600
#537F5E
oklch(55.5% 0.071 151.4)
-
Step 700
700
#436C4E
oklch(49.2% 0.067 151.9)
-
Step 800
800 (this color)
#37573F
oklch(42.4% 0.055 151.4)
-
Step 900
900
#304836
oklch(37.6% 0.043 151.7)
-
Step 950
950
#1D2A20
oklch(26.9% 0.026 151.5)
#37573F 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) | #57523E | 0.047 |
| Deuteranopia (no green cones) | #524E40 | 0.047 |
| Tritanopia (no blue cones) | #325650 | 0.029 |
| Achromatopsia (no color) | #505050 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37573F
#37573F
oklch(42.4% 0.055 151.4)
- #60435C
#60435C
oklch(42.4% 0.055 331.4)
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 #37573F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pine #2B5D34 ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.044
- Spruce #0A5F38 ΔE 0.045
- Dark Blue Green #005249 ΔE 0.048
- Deep Teal #00555A ΔE 0.057
- Navy Green #35530A ΔE 0.059
- Army Green #4B5D16 ΔE 0.060
Use #37573F 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.