#537B5B
Closest named color: Dark Sage (#598556). oklch(54.4% 0.067 150), rgb(83, 123, 91).
Aa
White text reads best on this color (4.82:1).
About this color
#537B5B is a medium-dark, muted green. In OKLCH its lightness is 54%, its chroma 0.067 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.035 away. White text reads best on it, at 4.82:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.35:1 |
| White text | 4.82:1 |
Values
| HEX | #537B5B |
| RGB | rgb(83, 123, 91) |
| HSL | hsl(132, 19%, 40%) |
| OKLCH | oklch(54.4% 0.067 150) |
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 #537B5B | 4.82:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #537B5B | 4.35:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #537B5B text on white | 4.82:1 | AA | Lc 73.4 | Content text, not long reading |
| #537B5B text on black | 4.35:1 | AA large text | Lc -28.3 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6ECE7
oklch(93.7% 0.009 150.7)
-
Step 200
200
#D2DCD3
oklch(88.4% 0.016 148.4)
-
Step 300
300
#B4C6B7
oklch(80.9% 0.029 150.3)
-
Step 400
400
#8CAA91
oklch(70.8% 0.049 149.8)
-
Step 500
500
#6F9476
oklch(63% 0.061 150.1)
-
Step 600
600 (this color)
#537B5B
oklch(54.4% 0.067 150)
-
Step 700
700
#466B4E
oklch(49.1% 0.063 150.4)
-
Step 800
800
#3A5740
oklch(42.7% 0.051 150.2)
-
Step 900
900
#324836
oklch(37.7% 0.041 149.7)
-
Step 950
950
#1E2A20
oklch(27% 0.025 149.5)
#537B5B 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) | #7C7459 | 0.058 |
| Deuteranopia (no green cones) | #75705D | 0.056 |
| Tritanopia (no blue cones) | #4D7A72 | 0.036 |
| Achromatopsia (no color) | #727272 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537B5B
#537B5B
oklch(54.4% 0.067 150)
- #866283
#866283
oklch(54.5% 0.066 329.3)
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 #537B5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.035
- Military Green #667C3E ΔE 0.042
- Muddy Green #657432 ΔE 0.049
- Dark Moss Green #606C38 ΔE 0.052
- Sea Green #2E8B57 ΔE 0.058
- Swamp #698339 ΔE 0.060
- Slate Green #658D6D ΔE 0.061
- Dark Olive Green #556B2F ΔE 0.062
Use #537B5B 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.