#537C40
Closest named color: Military Green (#667C3E). oklch(54.1% 0.099 136.5), rgb(83, 124, 64).
Aa
White text reads best on this color (4.85:1).
About this color
#537C40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.099 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.024 away. White text reads best on it, at 4.85:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #537C40 |
| RGB | rgb(83, 124, 64) |
| HSL | hsl(101, 32%, 37%) |
| OKLCH | oklch(54.1% 0.099 136.5) |
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 #537C40 | 4.85:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #537C40 | 4.32:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #537C40 text on white | 4.85:1 | AA | Lc 73.6 | Content text, not long reading |
| #537C40 text on black | 4.32:1 | AA large text | Lc -28.1 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E6ECE4
oklch(93.6% 0.012 137.8)
-
Step 200
200
#D2DDCD
oklch(88.5% 0.025 135.7)
-
Step 300
300
#B4C8AB
oklch(81% 0.045 135.9)
-
Step 400
400
#8CAB7F
oklch(70.6% 0.071 136.6)
-
Step 500
500
#70965E
oklch(63% 0.091 136)
-
Step 600
600 (this color)
#537C40
oklch(54.1% 0.099 136.5)
-
Step 700
700
#476D36
oklch(49.2% 0.093 136.7)
-
Step 800
800
#3B582D
oklch(42.6% 0.076 136.2)
-
Step 900
900
#334929
oklch(37.8% 0.059 136.4)
-
Step 950
950
#1E2B18
oklch(27.1% 0.038 136.2)
#537C40 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) | #80743B | 0.064 |
| Deuteranopia (no green cones) | #7A7044 | 0.065 |
| Tritanopia (no blue cones) | #52786E | 0.070 |
| Achromatopsia (no color) | #717171 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537C40
#537C40
oklch(54.1% 0.099 136.5)
- #865C95
#865C95
oklch(54.1% 0.099 316.9)
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 #537C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.024
- Muddy Green #657432 ΔE 0.029
- Dark Sage #598556 ΔE 0.035
- Swamp #698339 ΔE 0.038
- Olive Green #677A04 ΔE 0.043
- Murky Green #6C7A0E ΔE 0.044
- Dark Moss Green #606C38 ΔE 0.047
- Sea Green #2E8B57 ΔE 0.049
Use #537C40 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.