#51972D
Closest named color: Grass Green (#3F9B0B). oklch(60.8% 0.156 136.9), rgb(81, 151, 45).
Aa
Black text reads best on this color (5.81:1).
About this color
#51972D is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.156 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.029 away. Black text reads best on it, at 5.81:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #51972D |
| RGB | rgb(81, 151, 45) |
| HSL | hsl(100, 54%, 38%) |
| OKLCH | oklch(60.8% 0.156 136.9) |
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 #51972D | 3.61:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #51972D | 5.81:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #51972D text on white | 3.61:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #51972D text on black | 5.81:1 | AA | Lc -38.2 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E3EEDF
oklch(93.7% 0.023 137.2)
-
Step 200
200
#CCE0C5
oklch(88.4% 0.042 137.5)
-
Step 300
300
#AACD9C
oklch(81% 0.077 136.9)
-
Step 400
400
#7BB264
oklch(70.6% 0.122 137)
-
Step 500
500 (this color)
#51972D
oklch(60.8% 0.156 136.9)
-
Step 600
600
#3C8800
oklch(55.6% 0.168 136.9)
-
Step 700
700
#317200
oklch(49% 0.148 136.9)
-
Step 800
800
#275E00
oklch(42.7% 0.129 137)
-
Step 900
900
#244D0E
oklch(37.6% 0.102 137.1)
-
Step 950
950
#162D0B
oklch(26.9% 0.064 136.9)
#51972D 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) | #9C8A1D | 0.099 |
| Deuteranopia (no green cones) | #938437 | 0.100 |
| Tritanopia (no blue cones) | #4D9282 | 0.110 |
| Achromatopsia (no color) | #878787 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51972D
#51972D
oklch(60.8% 0.156 136.9)
- #A761C0
#A761C0
oklch(60.9% 0.156 316.6)
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 #51972D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.029
- Grassy Green #419C03 ΔE 0.031
- Sap Green #5C8B15 ΔE 0.033
- Olive Drab #6B8E23 ΔE 0.034
- Mossy Green #638B27 ΔE 0.037
- Dark Yellow Green #728F02 ΔE 0.038
- Fern Green #548D44 ΔE 0.042
- Irish Green #019529 ΔE 0.044
Use #51972D 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.