#618C51
Closest named color: Light Forest Green (#4F9153). oklch(59.3% 0.098 137.6), rgb(97, 140, 81).
Aa
Black text reads best on this color (5.37:1).
About this color
#618C51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.098 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.022 away. Black text reads best on it, at 5.37:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #618C51 |
| RGB | rgb(97, 140, 81) |
| HSL | hsl(104, 27%, 43%) |
| OKLCH | oklch(59.3% 0.098 137.6) |
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 #618C51 | 3.90:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #618C51 | 5.37:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #618C51 text on white | 3.90:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #618C51 text on black | 5.37:1 | AA | Lc -35.3 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E6ECE4
oklch(93.6% 0.012 137.8)
-
Step 200
200
#D2DDCE
oklch(88.5% 0.023 137.3)
-
Step 300
300
#B3C8AC
oklch(80.9% 0.045 137.9)
-
Step 400
400
#8CAB80
oklch(70.6% 0.07 137.1)
-
Step 500
500
#6F9660
oklch(63% 0.089 137.3)
-
Step 600
600 (this color)
#618C51
oklch(59.3% 0.098 137.6)
-
Step 700
700
#466D38
oklch(49.2% 0.091 137.9)
-
Step 800
800
#3A592E
oklch(42.8% 0.077 137.5)
-
Step 900
900
#32492A
oklch(37.7% 0.058 137.9)
-
Step 950
950
#1D2B19
oklch(27% 0.038 138.9)
#618C51 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) | #90834D | 0.067 |
| Deuteranopia (no green cones) | #897F54 | 0.065 |
| Tritanopia (no blue cones) | #5F887E | 0.069 |
| Achromatopsia (no color) | #818181 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618C51
#618C51
oklch(59.3% 0.098 137.6)
- #966BA4
#966BA4
oklch(59.3% 0.098 317.6)
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 #618C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.022
- Fern Green #548D44 ΔE 0.024
- Dark Sage #598556 ΔE 0.026
- Moss Green #658B38 ΔE 0.027
- Khaki Green #728639 ΔE 0.030
- Swamp #698339 ΔE 0.031
- Drab Green #749551 ΔE 0.037
- Slate Green #658D6D ΔE 0.039
Use #618C51 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.