#40BB81
Closest named color: Green Blue (#01C08D). oklch(70.9% 0.139 158.9), rgb(64, 187, 129).
Aa
Black text reads best on this color (8.64:1).
About this color
#40BB81 is a medium-light, moderately saturated green. In OKLCH its lightness is 71%, its chroma 0.139 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.021 away. Black text reads best on it, at 8.64:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.64:1 |
| White text | 2.42:1 |
Values
| HEX | #40BB81 |
| RGB | rgb(64, 187, 129) |
| HSL | hsl(152, 49%, 49%) |
| OKLCH | oklch(70.9% 0.139 158.9) |
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 #40BB81 | 2.42:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #40BB81 | 8.64:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #40BB81 text on white | 2.42:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #40BB81 text on black | 8.64:1 | AAA | Lc -54.5 | 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 400.
-
Step 50
50
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DDEFE4
oklch(93.6% 0.024 159.1)
-
Step 200
200
#BFE3CE
oklch(88.4% 0.047 159.7)
-
Step 300
300
#8FD2AC
oklch(80.8% 0.087 158.8)
-
Step 400
400 (this color)
#40BB81
oklch(70.9% 0.139 158.9)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008957
oklch(55.5% 0.128 159.1)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3B
oklch(42.8% 0.098 159.1)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#40BB81 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) | #B9AD7D | 0.129 |
| Deuteranopia (no green cones) | #A9A285 | 0.125 |
| Tritanopia (no blue cones) | #00BAAC | 0.062 |
| Achromatopsia (no color) | #A6A6A6 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BB81
#40BB81
oklch(70.9% 0.139 158.9)
- #D97DBE
#D97DBE
oklch(71% 0.139 339)
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 #40BB81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.021
- Greenblue #23C48B ΔE 0.025
- Dark Seafoam #1FB57A ΔE 0.026
- Medium Sea Green #3CB371 ΔE 0.027
- Dark Mint #48C072 ΔE 0.028
- Green Teal #0CB577 ΔE 0.030
- Dark Mint Green #20C073 ΔE 0.031
- Bluey Green #2BB179 ΔE 0.033
Use #40BB81 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.