#40AC59
Closest named color: Dark Pastel Green (#56AE57). oklch(66.3% 0.155 148.2), rgb(64, 172, 89).
Aa
Black text reads best on this color (7.26:1).
About this color
#40AC59 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.155 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.018 away. Black text reads best on it, at 7.26:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.26:1 |
| White text | 2.89:1 |
Values
| HEX | #40AC59 |
| RGB | rgb(64, 172, 89) |
| HSL | hsl(134, 46%, 46%) |
| OKLCH | oklch(66.3% 0.155 148.2) |
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 #40AC59 | 2.89:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #40AC59 | 7.26:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #40AC59 text on white | 2.89:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #40AC59 text on black | 7.26:1 | AAA | Lc -47.0 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE2
oklch(93.6% 0.021 147.6)
-
Step 200
200
#C7E1CA
oklch(88.4% 0.042 148.5)
-
Step 300
300
#A0CFA5
oklch(81% 0.077 147.7)
-
Step 400
400
#67B575
oklch(70.6% 0.121 148.4)
-
Step 500
500 (this color)
#40AC59
oklch(66.3% 0.155 148.2)
-
Step 600
600
#008B37
oklch(55.5% 0.16 148.3)
-
Step 700
700
#00752D
oklch(49.1% 0.141 148.2)
-
Step 800
800
#006023
oklch(42.7% 0.123 148.1)
-
Step 900
900
#0B4F20
oklch(37.6% 0.1 148.4)
-
Step 950
950
#0B2F13
oklch(27.1% 0.065 147.8)
#40AC59 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) | #AE9E52 | 0.125 |
| Deuteranopia (no green cones) | #A0945F | 0.124 |
| Tritanopia (no blue cones) | #21A998 | 0.088 |
| Achromatopsia (no color) | #989898 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AC59
#40AC59
oklch(66.3% 0.155 148.2)
- #C56DC2
#C56DC2
oklch(66.3% 0.155 328.4)
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 #40AC59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.018
- Jade Green #2BAF6A ΔE 0.020
- Mid Green #50A747 ΔE 0.020
- Seaweed Green #35AD6B ΔE 0.021
- Medium Green #39AD48 ΔE 0.021
- Algae #54AC68 ΔE 0.026
- Fern #63A950 ΔE 0.027
- Medium Sea Green #3CB371 ΔE 0.030
Use #40AC59 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.