#40BF60
Closest named color: Algae Green (#21C36F). oklch(71.3% 0.174 148.3), rgb(64, 191, 96).
Aa
Black text reads best on this color (8.83:1).
About this color
#40BF60 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.174 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.018 away. Black text reads best on it, at 8.83:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 8.83:1 |
| White text | 2.37:1 |
Values
| HEX | #40BF60 |
| RGB | rgb(64, 191, 96) |
| HSL | hsl(135, 50%, 50%) |
| OKLCH | oklch(71.3% 0.174 148.3) |
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 #40BF60 | 2.37:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #40BF60 | 8.83:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #40BF60 text on white | 2.37:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #40BF60 text on black | 8.83:1 | AAA | Lc -55.6 | 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 400.
-
Step 50
50
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DCF0DE
oklch(93.5% 0.032 148.2)
-
Step 200
200
#BFE5C3
oklch(88.6% 0.061 147.9)
-
Step 300
300
#8FD499
oklch(80.9% 0.108 148.2)
-
Step 400
400 (this color)
#40BF60
oklch(71.3% 0.174 148.3)
-
Step 500
500
#00A543
oklch(63% 0.181 148.3)
-
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
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300E
oklch(27% 0.077 148.3)
#40BF60 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) | #C1AF58 | 0.140 |
| Deuteranopia (no green cones) | #B1A467 | 0.138 |
| Tritanopia (no blue cones) | #0BBBA9 | 0.100 |
| Achromatopsia (no color) | #A8A8A8 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BF60
#40BF60
oklch(71.3% 0.174 148.3)
- #DB76D8
#DB76D8
oklch(71.3% 0.174 328.3)
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 #40BF60, closest first.
No curated palette has a color within ΔE 0.04 of #40BF60.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.018
- Dark Mint Green #20C073 ΔE 0.022
- Dark Mint #48C072 ΔE 0.022
- Cool Green #33B864 ΔE 0.024
- Shamrock Green #02C14D ΔE 0.031
- Leafy Green #51B73B ΔE 0.034
- Turtle Green #75B84F ΔE 0.041
- Boring Green #63B365 ΔE 0.043
Use #40BF60 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.