#537F66
Closest named color: Dark Sage (#598556). oklch(55.7% 0.062 158.6), rgb(83, 127, 102).
Aa
Black text reads best on this color (4.59:1).
About this color
#537F66 is a medium-dark, muted green. In OKLCH its lightness is 56%, its chroma 0.062 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.034 away. Black text reads best on it, at 4.59:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #537F66 |
| RGB | rgb(83, 127, 102) |
| HSL | hsl(146, 21%, 41%) |
| OKLCH | oklch(55.7% 0.062 158.6) |
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 #537F66 | 4.56:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #537F66 | 4.59:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #537F66 text on white | 4.56:1 | AA | Lc 71.7 | Content text, not long reading |
| #537F66 text on black | 4.59:1 | AA | Lc -30.0 | Non-text elements, placeholder text |
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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6ECE8
oklch(93.7% 0.008 157.1)
-
Step 200
200
#D1DCD5
oklch(88.4% 0.015 158.2)
-
Step 300
300
#B2C6BA
oklch(80.8% 0.027 159.4)
-
Step 400
400
#8AAA96
oklch(70.8% 0.046 157.6)
-
Step 500
500
#6C947D
oklch(63% 0.056 159.1)
-
Step 600
600 (this color)
#537F66
oklch(55.7% 0.062 158.6)
-
Step 700
700
#436B54
oklch(49.1% 0.059 158.1)
-
Step 800
800
#375745
oklch(42.6% 0.048 158.8)
-
Step 900
900
#30483A
oklch(37.7% 0.038 158.3)
-
Step 950
950
#1C2A22
oklch(26.9% 0.024 159.2)
#537F66 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) | #7E7965 | 0.059 |
| Deuteranopia (no green cones) | #777467 | 0.056 |
| Tritanopia (no blue cones) | #4A7E78 | 0.029 |
| Achromatopsia (no color) | #767676 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537F66
#537F66
oklch(55.7% 0.062 158.6)
- #8C6580
#8C6580
oklch(55.6% 0.063 338.2)
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 #537F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.034
- Slate Green #658D6D ΔE 0.049
- Military Green #667C3E ΔE 0.052
- Dusty Teal #4C9085 ΔE 0.056
- Sea Green #2E8B57 ΔE 0.058
- Teal #008080 ΔE 0.058
- Bluegreen #017A79 ΔE 0.062
- Viridian #1E9167 ΔE 0.062
Use #537F66 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.