#40E6BA
Closest named color: Aqua Marine (#2EE8BB). oklch(83.1% 0.148 170.7), rgb(64, 230, 186).
Aa
Black text reads best on this color (13.24:1).
About this color
#40E6BA is a light, vivid teal or cyan. In OKLCH its lightness is 83%, its chroma 0.148 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.007 away. Black text reads best on it, at 13.24:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 13.24:1 |
| White text | 1.58:1 |
Values
| HEX | #40E6BA |
| RGB | rgb(64, 230, 186) |
| HSL | hsl(164, 77%, 58%) |
| OKLCH | oklch(83.1% 0.148 170.7) |
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 #40E6BA | 1.58:1 | Fails | Lc -29.5 | Dividers and decoration only |
| Black text on #40E6BA | 13.24:1 | AAA | Lc 77.7 | Fine for body text |
| #40E6BA text on white | 1.58:1 | Fails | Lc 26.1 | Dividers and decoration only |
| #40E6BA text on black | 13.24:1 | AAA | Lc -76.9 | 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
#E9FAF3
oklch(97.1% 0.02 169.4)
-
Step 100
100
#CFF4E6
oklch(93.7% 0.043 170.5)
-
Step 200
200
#A1EBD2
oklch(88.5% 0.081 171.2)
-
Step 300
300 (this color)
#40E6BA
oklch(83.1% 0.148 170.7)
-
Step 400
400
#00BC94
oklch(70.8% 0.139 170.4)
-
Step 500
500
#00A17F
oklch(63.1% 0.124 170.8)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#40E6BA 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) | #DFD7B8 | 0.151 |
| Deuteranopia (no green cones) | #CAC7BD | 0.146 |
| Tritanopia (no blue cones) | #00E8D9 | 0.041 |
| Achromatopsia (no color) | #CDCDCD | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40E6BA
#40E6BA
oklch(83.1% 0.148 170.7)
- #FFA9D1
#FFA9D1
oklch(83% 0.112 350.4)
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 #40E6BA, closest first.
No curated palette has a color within ΔE 0.04 of #40E6BA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.007
- Turquoise #40E0D0 ΔE 0.040
- Bright Teal #01F9C6 ΔE 0.049
- Aqua Green #12E193 ΔE 0.055
- Emerald #06D6A0 ΔE 0.055
- Light Teal #90E4C1 ΔE 0.058
- Light Turquoise #7EF4CC ΔE 0.062
- Seafoam Blue #78D1B6 ΔE 0.063
Use #40E6BA 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.