#40A63F
Closest named color: Mid Green (#50A747). oklch(64.3% 0.17 143.1), rgb(64, 166, 63).
Aa
Black text reads best on this color (6.74:1).
About this color
#40A63F is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.170 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.016 away. Black text reads best on it, at 6.74:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.74:1 |
| White text | 3.11:1 |
Values
| HEX | #40A63F |
| RGB | rgb(64, 166, 63) |
| HSL | hsl(119, 45%, 45%) |
| OKLCH | oklch(64.3% 0.17 143.1) |
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 #40A63F | 3.11:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #40A63F | 6.74:1 | AA | Lc 46.3 | Large or bold text, headings |
| #40A63F text on white | 3.11:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #40A63F text on black | 6.74:1 | AA | Lc -44.0 | 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
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E2C6
oklch(88.6% 0.047 143.2)
-
Step 300
300
#A1CF9E
oklch(80.9% 0.083 143.2)
-
Step 400
400
#6BB668
oklch(70.8% 0.133 143.2)
-
Step 500
500 (this color)
#40A63F
oklch(64.3% 0.17 143.1)
-
Step 600
600
#008C0F
oklch(55.5% 0.185 143.2)
-
Step 700
700
#00760A
oklch(49.1% 0.164 143.1)
-
Step 800
800
#006107
oklch(42.7% 0.142 143.1)
-
Step 900
900
#114F12
oklch(37.5% 0.111 143.2)
-
Step 950
950
#0D2F0D
oklch(27.1% 0.07 143.3)
#40A63F 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) | #A99734 | 0.123 |
| Deuteranopia (no green cones) | #9D8F48 | 0.123 |
| Tritanopia (no blue cones) | #2DA190 | 0.109 |
| Achromatopsia (no color) | #929292 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A63F
#40A63F
oklch(64.3% 0.17 143.1)
- #BD64C8
#BD64C8
oklch(64.3% 0.17 323.1)
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 #40A63F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.016
- Medium Green #39AD48 ΔE 0.019
- Kelly Green #02AB2E ΔE 0.033
- Grass #5CAC2D ΔE 0.033
- Leaf Green #5CA904 ΔE 0.037
- Dark Pastel Green #56AE57 ΔE 0.038
- Grassy Green #419C03 ΔE 0.039
- Fern #63A950 ΔE 0.039
Use #40A63F 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.