#42EAD1
Closest named color: Turquoise (#40E0D0). oklch(84.7% 0.139 180.5), rgb(66, 234, 209).
Aa
Black text reads best on this color (13.92:1).
About this color
#42EAD1 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.139 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.028 away. Black text reads best on it, at 13.92:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 13.92:1 |
| White text | 1.50:1 |
Values
| HEX | #42EAD1 |
| RGB | rgb(66, 234, 209) |
| HSL | hsl(171, 80%, 59%) |
| OKLCH | oklch(84.7% 0.139 180.5) |
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 #42EAD1 | 1.50:1 | Fails | Lc -26.4 | Dividers and decoration only |
| Black text on #42EAD1 | 13.92:1 | AAA | Lc 80.4 | Fine for body text |
| #42EAD1 text on white | 1.50:1 | Fails | Lc 23.3 | Dividers and decoration only |
| #42EAD1 text on black | 13.92:1 | AAA | Lc -79.9 | 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 200.
-
Step 50
50
#E5FBF6
oklch(97.1% 0.024 180.7)
-
Step 100
100
#C5F6EB
oklch(93.6% 0.052 179.9)
-
Step 200
200 (this color)
#42EAD1
oklch(84.7% 0.139 180.5)
-
Step 300
300
#00DFC5
oklch(81% 0.147 180.3)
-
Step 400
400
#00BAA4
oklch(70.7% 0.128 180.3)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#42EAD1 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) | #E0DCD0 | 0.147 |
| Deuteranopia (no green cones) | #C9CBD3 | 0.140 |
| Tritanopia (no blue cones) | #00EEE2 | 0.023 |
| Achromatopsia (no color) | #D2D2D2 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42EAD1
#42EAD1
oklch(84.7% 0.139 180.5)
- #FFB4CA
#FFB4CA
oklch(84.6% 0.091 0)
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 #42EAD1, closest first.
No curated palette has a color within ΔE 0.04 of #42EAD1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.028
- Aqua Marine #2EE8BB ΔE 0.032
- Bright Aqua #0BF9EA ΔE 0.044
- Bright Teal #01F9C6 ΔE 0.050
- Light Turquoise #7EF4CC ΔE 0.050
- Light Teal #90E4C1 ΔE 0.052
- Bright Light Blue #26F7FD ΔE 0.060
- Bright Turquoise #0FFEF9 ΔE 0.064
Use #42EAD1 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.