#51963A
Closest named color: Fern Green (#548D44). oklch(60.7% 0.145 138.7), rgb(81, 150, 58).
Aa
Black text reads best on this color (5.77:1).
About this color
#51963A is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.145 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.032 away. Black text reads best on it, at 5.77:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #51963A |
| RGB | rgb(81, 150, 58) |
| HSL | hsl(105, 44%, 41%) |
| OKLCH | oklch(60.7% 0.145 138.7) |
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 #51963A | 3.63:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #51963A | 5.77:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #51963A text on white | 3.63:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #51963A text on black | 5.77:1 | AA | Lc -37.9 | 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 500.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE0
oklch(93.5% 0.02 138.4)
-
Step 200
200
#CDE0C7
oklch(88.6% 0.039 138.2)
-
Step 300
300
#AACCA0
oklch(80.9% 0.071 138.6)
-
Step 400
400
#7CB26B
oklch(70.8% 0.114 138.4)
-
Step 500
500 (this color)
#51963A
oklch(60.7% 0.145 138.7)
-
Step 600
600
#3B881D
oklch(55.7% 0.158 138.7)
-
Step 700
700
#2D730D
oklch(49.1% 0.147 138.6)
-
Step 800
800
#275E11
oklch(42.8% 0.122 138.6)
-
Step 900
900
#254D17
oklch(37.8% 0.094 138.6)
-
Step 950
950
#162D0F
oklch(27% 0.059 138.9)
#51963A 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) | #9A8A30 | 0.095 |
| Deuteranopia (no green cones) | #918441 | 0.096 |
| Tritanopia (no blue cones) | #4C9182 | 0.099 |
| Achromatopsia (no color) | #868686 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51963A
#51963A
oklch(60.7% 0.145 138.7)
- #A663B9
#A663B9
oklch(60.7% 0.144 318.5)
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 #51963A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.032
- Olive Drab #6B8E23 ΔE 0.032
- Mossy Green #638B27 ΔE 0.033
- Sap Green #5C8B15 ΔE 0.034
- Light Forest Green #4F9153 ΔE 0.035
- Moss Green #658B38 ΔE 0.036
- Flat Green #699D4C ΔE 0.039
- Muted Green #5FA052 ΔE 0.040
Use #51963A 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.