#40C38E
Closest named color: Greenblue (#23C48B). oklch(73.3% 0.138 162.3), rgb(64, 195, 142).
Aa
Black text reads best on this color (9.41:1).
About this color
#40C38E is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.138 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.013 away. Black text reads best on it, at 9.41:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.41:1 |
| White text | 2.23:1 |
Values
| HEX | #40C38E |
| RGB | rgb(64, 195, 142) |
| HSL | hsl(156, 52%, 51%) |
| OKLCH | oklch(73.3% 0.138 162.3) |
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 #40C38E | 2.23:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #40C38E | 9.41:1 | AAA | Lc 60.4 | Content text, not long reading |
| #40C38E text on white | 2.23:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #40C38E text on black | 9.41:1 | AAA | Lc -58.6 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DCEFE5
oklch(93.5% 0.024 163.1)
-
Step 200
200
#BEE4D0
oklch(88.6% 0.048 162.3)
-
Step 300
300
#8CD2B0
oklch(80.8% 0.086 162.6)
-
Step 400
400 (this color)
#40C38E
oklch(73.3% 0.138 162.3)
-
Step 500
500
#00A270
oklch(63% 0.137 162.6)
-
Step 600
600
#00895D
oklch(55.7% 0.122 162)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
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)
#40C38E 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) | #C0B58B | 0.133 |
| Deuteranopia (no green cones) | #AFA991 | 0.128 |
| Tritanopia (no blue cones) | #00C3B5 | 0.055 |
| Achromatopsia (no color) | #AEAEAE | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40C38E
#40C38E
oklch(73.3% 0.138 162.3)
- #E383C0
#E383C0
oklch(73.2% 0.139 342.4)
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 #40C38E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.013
- Green Blue #01C08D ΔE 0.021
- Dark Mint #48C072 ΔE 0.034
- Dark Mint Green #20C073 ΔE 0.040
- Soft Green #6FC276 ΔE 0.040
- Algae Green #21C36F ΔE 0.045
- Dark Seafoam #1FB57A ΔE 0.048
- Emerald #06D6A0 ΔE 0.051
Use #40C38E 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.