#40E2C1
Closest named color: Aqua Marine (#2EE8BB). oklch(82.3% 0.139 175.7), rgb(64, 226, 193).
Aa
Black text reads best on this color (12.86:1).
About this color
#40E2C1 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.139 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.022 away. Black text reads best on it, at 12.86:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.86:1 |
| White text | 1.63:1 |
Values
| HEX | #40E2C1 |
| RGB | rgb(64, 226, 193) |
| HSL | hsl(168, 74%, 57%) |
| OKLCH | oklch(82.3% 0.139 175.7) |
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 #40E2C1 | 1.63:1 | Fails | Lc -31.3 | Non-text elements, placeholder text |
| Black text on #40E2C1 | 12.86:1 | AAA | Lc 76.1 | Fine for body text |
| #40E2C1 text on white | 1.63:1 | Fails | Lc 27.7 | Dividers and decoration only |
| #40E2C1 text on black | 12.86:1 | AAA | Lc -75.2 | 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
#E9FAF5
oklch(97.1% 0.019 176.5)
-
Step 100
100
#CFF3E9
oklch(93.6% 0.04 176.8)
-
Step 200
200
#A2EAD7
oklch(88.4% 0.077 176.2)
-
Step 300
300 (this color)
#40E2C1
oklch(82.3% 0.139 175.7)
-
Step 400
400
#00BB9D
oklch(70.7% 0.133 175.7)
-
Step 500
500
#00A086
oklch(63% 0.118 175.6)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#40E2C1 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) | #DAD4C0 | 0.146 |
| Deuteranopia (no green cones) | #C4C4C3 | 0.139 |
| Tritanopia (no blue cones) | #00E5D8 | 0.031 |
| Achromatopsia (no color) | #CACACA | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40E2C1
#40E2C1
oklch(82.3% 0.139 175.7)
- #FFA6C8
#FFA6C8
oklch(82.2% 0.112 355.3)
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 #40E2C1, closest first.
No curated palette has a color within ΔE 0.04 of #40E2C1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.022
- Turquoise #40E0D0 ΔE 0.024
- Seafoam Blue #78D1B6 ΔE 0.052
- Emerald #06D6A0 ΔE 0.055
- Medium Turquoise #48D1CC ΔE 0.055
- Medium Aquamarine #66CDAA ΔE 0.057
- Light Teal #90E4C1 ΔE 0.058
- Bright Teal #01F9C6 ΔE 0.062
Use #40E2C1 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.