#40DEC2
Closest named color: Turquoise (#40E0D0). oklch(81.3% 0.135 178), rgb(64, 222, 194).
Aa
Black text reads best on this color (12.44:1).
About this color
#40DEC2 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.135 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.019 away. Black text reads best on it, at 12.44:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.44:1 |
| White text | 1.68:1 |
Values
| HEX | #40DEC2 |
| RGB | rgb(64, 222, 194) |
| HSL | hsl(169, 71%, 56%) |
| OKLCH | oklch(81.3% 0.135 178) |
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 #40DEC2 | 1.68:1 | Fails | Lc -33.3 | Non-text elements, placeholder text |
| Black text on #40DEC2 | 12.44:1 | AAA | Lc 74.3 | Content text, not long reading |
| #40DEC2 text on white | 1.68:1 | Fails | Lc 29.6 | Dividers and decoration only |
| #40DEC2 text on black | 12.44:1 | AAA | Lc -73.3 | Content text, not long reading |
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
#E9FAF5
oklch(97.1% 0.019 176.5)
-
Step 100
100
#CFF3EA
oklch(93.6% 0.039 178.6)
-
Step 200
200
#A3EAD9
oklch(88.5% 0.075 177.9)
-
Step 300
300 (this color)
#40DEC2
oklch(81.3% 0.135 178)
-
Step 400
400
#00BAA1
oklch(70.6% 0.129 178.5)
-
Step 500
500
#00A089
oklch(63.1% 0.116 177.6)
-
Step 600
600
#008673
oklch(55.5% 0.102 178.1)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#40DEC2 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) | #D5D0C1 | 0.142 |
| Deuteranopia (no green cones) | #C0C1C4 | 0.135 |
| Tritanopia (no blue cones) | #00E1D6 | 0.027 |
| Achromatopsia (no color) | #C7C7C7 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40DEC2
#40DEC2
oklch(81.3% 0.135 178)
- #FFA2C1
#FFA2C1
oklch(81.4% 0.116 358.5)
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 #40DEC2, closest first.
No curated palette has a color within ΔE 0.04 of #40DEC2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.019
- Aqua Marine #2EE8BB ΔE 0.033
- Medium Turquoise #48D1CC ΔE 0.044
- Seafoam Blue #78D1B6 ΔE 0.044
- Medium Aquamarine #66CDAA ΔE 0.048
- Emerald #06D6A0 ΔE 0.053
- Dark Turquoise #00CED1 ΔE 0.060
- Pale Teal #82CBB2 ΔE 0.061
Use #40DEC2 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.