#538B4A
Closest named color: Fern Green (#548D44). oklch(58.1% 0.112 141), rgb(83, 139, 74).
Aa
Black text reads best on this color (5.15:1).
About this color
#538B4A is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.112 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.011 away. Black text reads best on it, at 5.15:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.15:1 |
| White text | 4.06:1 |
Values
| HEX | #538B4A |
| RGB | rgb(83, 139, 74) |
| HSL | hsl(112, 31%, 42%) |
| OKLCH | oklch(58.1% 0.112 141) |
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 #538B4A | 4.06:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #538B4A | 5.15:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #538B4A text on white | 4.06:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #538B4A text on black | 5.15:1 | AA | Lc -33.9 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5ECE3
oklch(93.5% 0.014 138.7)
-
Step 200
200
#CFDECD
oklch(88.5% 0.028 142)
-
Step 300
300
#AFC9AB
oklch(80.8% 0.05 141.4)
-
Step 400
400
#85AE7E
oklch(70.8% 0.082 140.9)
-
Step 500
500
#65995D
oklch(63.1% 0.103 141.2)
-
Step 600
600 (this color)
#538B4A
oklch(58.1% 0.112 141)
-
Step 700
700
#3C6F34
oklch(49.1% 0.105 141)
-
Step 800
800
#325A2C
oklch(42.6% 0.086 141.2)
-
Step 900
900
#2D4A28
oklch(37.6% 0.066 140.8)
-
Step 950
950
#1A2C18
oklch(27.1% 0.043 142)
#538B4A 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) | #8E8145 | 0.080 |
| Deuteranopia (no green cones) | #867C4E | 0.079 |
| Tritanopia (no blue cones) | #4E877B | 0.074 |
| Achromatopsia (no color) | #7E7E7E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538B4A
#538B4A
oklch(58.1% 0.112 141)
- #9963A3
#9963A3
oklch(58.1% 0.113 321.2)
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 #538B4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.011
- Light Forest Green #4F9153 ΔE 0.017
- Moss Green #658B38 ΔE 0.025
- Dark Sage #598556 ΔE 0.028
- Swamp #698339 ΔE 0.031
- Sea Green #2E8B57 ΔE 0.032
- Mossy Green #638B27 ΔE 0.035
- Khaki Green #728639 ΔE 0.037
Use #538B4A 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.