#42973F
Closest named color: Fern Green (#548D44). oklch(60.4% 0.15 142.9), rgb(66, 151, 63).
Aa
Black text reads best on this color (5.73:1).
About this color
#42973F is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.150 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.035 away. Black text reads best on it, at 5.73:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #42973F |
| RGB | rgb(66, 151, 63) |
| HSL | hsl(118, 41%, 42%) |
| OKLCH | oklch(60.4% 0.15 142.9) |
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 #42973F | 3.66:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #42973F | 5.73:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #42973F text on white | 3.66:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #42973F text on black | 5.73:1 | AA | Lc -37.7 | 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 500.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE1C8
oklch(88.6% 0.042 143)
-
Step 300
300
#A5CDA2
oklch(80.8% 0.073 143.1)
-
Step 400
400
#73B36F
oklch(70.6% 0.117 142.9)
-
Step 500
500 (this color)
#42973F
oklch(60.4% 0.15 142.9)
-
Step 600
600
#288A27
oklch(55.7% 0.162 142.9)
-
Step 700
700
#187518
oklch(49.2% 0.152 142.8)
-
Step 800
800
#185F18
oklch(42.7% 0.125 143)
-
Step 900
900
#1C4E1A
oklch(37.7% 0.098 142.7)
-
Step 950
950
#122E11
oklch(27.1% 0.061 143)
#42973F 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) | #9A8A36 | 0.108 |
| Deuteranopia (no green cones) | #8F8346 | 0.108 |
| Tritanopia (no blue cones) | #359384 | 0.096 |
| Achromatopsia (no color) | #868686 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42973F
#42973F
oklch(60.4% 0.15 142.9)
- #AB5FB5
#AB5FB5
oklch(60.5% 0.15 322.8)
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 #42973F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.035
- Kelley Green #009337 ΔE 0.035
- Light Forest Green #4F9153 ΔE 0.036
- Grass Green #3F9B0B ΔE 0.039
- Irish Green #019529 ΔE 0.039
- Sap Green #5C8B15 ΔE 0.040
- Mossy Green #638B27 ΔE 0.041
- Grassy Green #419C03 ΔE 0.042
Use #42973F 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.