#40BB88
Closest named color: Green Blue (#01C08D). oklch(71.1% 0.133 162), rgb(64, 187, 136).
Aa
Black text reads best on this color (8.68:1).
About this color
#40BB88 is a medium-light, moderately saturated green. In OKLCH its lightness is 71%, its chroma 0.133 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.020 away. Black text reads best on it, at 8.68:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.68:1 |
| White text | 2.41:1 |
Values
| HEX | #40BB88 |
| RGB | rgb(64, 187, 136) |
| HSL | hsl(155, 49%, 49%) |
| OKLCH | oklch(71.1% 0.133 162) |
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 #40BB88 | 2.41:1 | Fails | Lc -52.3 | Large or bold text, headings |
| Black text on #40BB88 | 8.68:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #40BB88 text on white | 2.41:1 | Fails | Lc 47.3 | Large or bold text, headings |
| #40BB88 text on black | 8.68:1 | AAA | Lc -54.7 | 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
#DDEFE5
oklch(93.6% 0.023 161.7)
-
Step 200
200
#BFE3D0
oklch(88.5% 0.046 162.3)
-
Step 300
300
#8FD2B0
oklch(80.9% 0.084 161.7)
-
Step 400
400 (this color)
#40BB88
oklch(71.1% 0.133 162)
-
Step 500
500
#00A36F
oklch(63.2% 0.139 161.8)
-
Step 600
600
#00895D
oklch(55.7% 0.122 162)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3F
oklch(42.6% 0.093 162.3)
-
Step 900
900
#004F34
oklch(37.8% 0.083 162.1)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#40BB88 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) | #B8AE85 | 0.127 |
| Deuteranopia (no green cones) | #A8A28B | 0.123 |
| Tritanopia (no blue cones) | #00BBAD | 0.053 |
| Achromatopsia (no color) | #A7A7A7 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BB88
#40BB88
oklch(71.1% 0.133 162)
- #D97FB9
#D97FB9
oklch(71.1% 0.132 341.8)
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 #40BB88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.020
- Greenblue #23C48B ΔE 0.026
- Dark Seafoam #1FB57A ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.034
- Greeny Blue #42B395 ΔE 0.034
- Green Teal #0CB577 ΔE 0.035
- Bluey Green #2BB179 ΔE 0.035
- Dark Mint #48C072 ΔE 0.036
Use #40BB88 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.