#40BD63
Closest named color: Cool Green (#33B864). oklch(70.9% 0.169 149.1), rgb(64, 189, 99).
Aa
Black text reads best on this color (8.67:1).
About this color
#40BD63 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.169 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.017 away. Black text reads best on it, at 8.67:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.67:1 |
| White text | 2.42:1 |
Values
| HEX | #40BD63 |
| RGB | rgb(64, 189, 99) |
| HSL | hsl(137, 49%, 50%) |
| OKLCH | oklch(70.9% 0.169 149.1) |
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 #40BD63 | 2.42:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #40BD63 | 8.67:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #40BD63 text on white | 2.42:1 | Fails | Lc 47.3 | Large or bold text, headings |
| #40BD63 text on black | 8.67:1 | AAA | Lc -54.8 | 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
#DDF0DF
oklch(93.6% 0.03 148.4)
-
Step 200
200
#BFE5C4
oklch(88.6% 0.06 148.8)
-
Step 300
300
#8FD49B
oklch(80.9% 0.106 149)
-
Step 400
400 (this color)
#40BD63
oklch(70.9% 0.169 149.1)
-
Step 500
500
#00A547
oklch(63% 0.178 149.1)
-
Step 600
600
#008B3B
oklch(55.6% 0.156 149.2)
-
Step 700
700
#007530
oklch(49.1% 0.138 149)
-
Step 800
800
#006026
oklch(42.7% 0.12 149)
-
Step 900
900
#00501F
oklch(37.7% 0.106 149.2)
-
Step 950
950
#003010
oklch(27% 0.075 149.4)
#40BD63 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) | #BEAD5C | 0.137 |
| Deuteranopia (no green cones) | #AFA269 | 0.136 |
| Tritanopia (no blue cones) | #0AB9A8 | 0.096 |
| Achromatopsia (no color) | #A6A6A6 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BD63
#40BD63
oklch(70.9% 0.169 149.1)
- #D976D4
#D976D4
oklch(70.8% 0.169 329)
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 #40BD63, closest first.
No curated palette has a color within ΔE 0.04 of #40BD63.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.017
- Algae Green #21C36F ΔE 0.019
- Dark Mint Green #20C073 ΔE 0.019
- Dark Mint #48C072 ΔE 0.020
- Leafy Green #51B73B ΔE 0.036
- Shamrock Green #02C14D ΔE 0.036
- Boring Green #63B365 ΔE 0.037
- Medium Sea Green #3CB371 ΔE 0.038
Use #40BD63 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.