#42E7DE
Closest named color: Turquoise (#40E0D0). oklch(84.4% 0.132 189.5), rgb(66, 231, 222).
Aa
Black text reads best on this color (13.71:1).
About this color
#42E7DE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 84%, its chroma 0.132 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.024 away. Black text reads best on it, at 13.71:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 13.71:1 |
| White text | 1.53:1 |
Values
| HEX | #42E7DE |
| RGB | rgb(66, 231, 222) |
| HSL | hsl(177, 77%, 58%) |
| OKLCH | oklch(84.4% 0.132 189.5) |
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 #42E7DE | 1.53:1 | Fails | Lc -27.4 | Dividers and decoration only |
| Black text on #42E7DE | 13.71:1 | AAA | Lc 79.6 | Fine for body text |
| #42E7DE text on white | 1.53:1 | Fails | Lc 24.2 | Dividers and decoration only |
| #42E7DE text on black | 13.71:1 | AAA | Lc -79.0 | 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
#E9FAF8
oklch(97.2% 0.018 188.4)
-
Step 100
100
#CEF3EF
oklch(93.7% 0.039 188.5)
-
Step 200
200
#A0E9E3
oklch(88.4% 0.073 189.5)
-
Step 300
300 (this color)
#42E7DE
oklch(84.4% 0.132 189.5)
-
Step 400
400
#00B8B1
oklch(70.6% 0.122 190)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#42E7DE 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) | #DADBDE | 0.140 |
| Deuteranopia (no green cones) | #C2C9DF | 0.132 |
| Tritanopia (no blue cones) | #00EDE4 | 0.018 |
| Achromatopsia (no color) | #D1D1D1 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42E7DE
#42E7DE
oklch(84.4% 0.132 189.5)
- #FFB4BF
#FFB4BF
oklch(84.3% 0.088 9.4)
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 #42E7DE, closest first.
No curated palette has a color within ΔE 0.04 of #42E7DE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.024
- Bright Aqua #0BF9EA ΔE 0.047
- Bright Light Blue #26F7FD ΔE 0.051
- Aqua Marine #2EE8BB ΔE 0.052
- Aqua Blue #02D8E9 ΔE 0.053
- Robin's Egg #6DEDFD ΔE 0.054
- Medium Turquoise #48D1CC ΔE 0.059
- Light Teal #90E4C1 ΔE 0.059
Use #42E7DE 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.