#40E4AC
Closest named color: Aqua Marine (#2EE8BB). oklch(82.2% 0.156 165.3), rgb(64, 228, 172).
Aa
Black text reads best on this color (12.91:1).
About this color
#40E4AC is a light, vivid green. In OKLCH its lightness is 82%, its chroma 0.156 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.019 away. Black text reads best on it, at 12.91:1.
| Hue family | Greens |
| Lightness | light (82%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.91:1 |
| White text | 1.62:1 |
Values
| HEX | #40E4AC |
| RGB | rgb(64, 228, 172) |
| HSL | hsl(160, 75%, 57%) |
| OKLCH | oklch(82.2% 0.156 165.3) |
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 #40E4AC | 1.62:1 | Fails | Lc -31.1 | Non-text elements, placeholder text |
| Black text on #40E4AC | 12.91:1 | AAA | Lc 76.3 | Fine for body text |
| #40E4AC text on white | 1.62:1 | Fails | Lc 27.5 | Dividers and decoration only |
| #40E4AC text on black | 12.91:1 | AAA | Lc -75.4 | Fine for body text |
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 300.
-
Step 50
50
#E9FAF2
oklch(97% 0.021 166.1)
-
Step 100
100
#CFF4E3
oklch(93.6% 0.045 165.9)
-
Step 200
200
#A2ECCB
oklch(88.5% 0.087 164.9)
-
Step 300
300 (this color)
#40E4AC
oklch(82.2% 0.156 165.3)
-
Step 400
400
#00BD8A
oklch(70.8% 0.148 165.3)
-
Step 500
500
#00A276
oklch(63.1% 0.132 165.5)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#40E4AC 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) | #DFD4A9 | 0.153 |
| Deuteranopia (no green cones) | #CAC5B0 | 0.148 |
| Tritanopia (no blue cones) | #00E4D5 | 0.056 |
| Achromatopsia (no color) | #CBCBCB | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40E4AC
#40E4AC
oklch(82.2% 0.156 165.3)
- #FFA3D7
#FFA3D7
oklch(82.2% 0.125 345.3)
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 #40E4AC, closest first.
No curated palette has a color within ΔE 0.04 of #40E4AC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.019
- Aqua Green #12E193 ΔE 0.037
- Emerald #06D6A0 ΔE 0.045
- Turquoise #40E0D0 ΔE 0.055
- Bright Teal #01F9C6 ΔE 0.057
- Weird Green #3AE57F ΔE 0.059
- Greenish Turquoise #00FBB0 ΔE 0.062
- Medium Aquamarine #66CDAA ΔE 0.065
Use #40E4AC 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.