#55AC40
Closest named color: Grass (#5CAC2D). oklch(66.7% 0.168 139.9), rgb(85, 172, 64).
Aa
Black text reads best on this color (7.36:1).
About this color
#55AC40 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.168 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.014 away. Black text reads best on it, at 7.36:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #55AC40 |
| RGB | rgb(85, 172, 64) |
| HSL | hsl(108, 46%, 46%) |
| OKLCH | oklch(66.7% 0.168 139.9) |
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 #55AC40 | 2.85:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #55AC40 | 7.36:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #55AC40 text on white | 2.85:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #55AC40 text on black | 7.36:1 | AAA | Lc -47.5 | Large or bold text, headings |
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
#E2EEDF
oklch(93.6% 0.024 139.4)
-
Step 200
200
#CAE1C5
oklch(88.5% 0.045 140.1)
-
Step 300
300
#A5CE9C
oklch(80.9% 0.081 140)
-
Step 400
400
#72B464
oklch(70.6% 0.131 140.1)
-
Step 500
500 (this color)
#55AC40
oklch(66.7% 0.168 139.9)
-
Step 600
600
#298A00
oklch(55.5% 0.178 139.9)
-
Step 700
700
#217400
oklch(49% 0.157 139.9)
-
Step 800
800
#196000
oklch(42.8% 0.138 140)
-
Step 900
900
#1B4F0D
oklch(37.8% 0.11 140)
-
Step 950
950
#112E0A
oklch(26.9% 0.07 140)
#55AC40 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) | #B19E34 | 0.114 |
| Deuteranopia (no green cones) | #A59649 | 0.114 |
| Tritanopia (no blue cones) | #4CA795 | 0.112 |
| Achromatopsia (no color) | #999999 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55AC40
#55AC40
oklch(66.7% 0.168 139.9)
- #C06ED3
#C06ED3
oklch(66.7% 0.167 319.9)
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 #55AC40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.014
- Mid Green #50A747 ΔE 0.018
- Medium Green #39AD48 ΔE 0.019
- Dark Pastel Green #56AE57 ΔE 0.023
- Fern #63A950 ΔE 0.025
- Leaf #71AA34 ΔE 0.026
- Leaf Green #5CA904 ΔE 0.029
- Leafy Green #51B73B ΔE 0.033
Use #55AC40 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.