#42EDCF
Closest named color: Aqua Marine (#2EE8BB). oklch(85.4% 0.143 178), rgb(66, 237, 207).
Aa
Black text reads best on this color (14.24:1).
About this color
#42EDCF is a light, vivid teal or cyan. In OKLCH its lightness is 85%, its chroma 0.143 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.030 away. Black text reads best on it, at 14.24:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.24:1 |
| White text | 1.47:1 |
Values
| HEX | #42EDCF |
| RGB | rgb(66, 237, 207) |
| HSL | hsl(169, 83%, 59%) |
| OKLCH | oklch(85.4% 0.143 178) |
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 #42EDCF | 1.47:1 | Fails | Lc -25.0 | Dividers and decoration only |
| Black text on #42EDCF | 14.24:1 | AAA | Lc 81.8 | Fine for body text |
| #42EDCF text on white | 1.47:1 | Fails | Lc 22.0 | Dividers and decoration only |
| #42EDCF text on black | 14.24:1 | AAA | Lc -81.3 | 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
#E5FBF5
oklch(97% 0.024 177.7)
-
Step 100
100
#C5F6EA
oklch(93.6% 0.053 178.5)
-
Step 200
200 (this color)
#42EDCF
oklch(85.4% 0.143 178)
-
Step 300
300
#00DFC1
oklch(80.9% 0.148 178.3)
-
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)
#42EDCF 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) | #E3DECE | 0.150 |
| Deuteranopia (no green cones) | #CCCED1 | 0.142 |
| Tritanopia (no blue cones) | #00F1E4 | 0.028 |
| Achromatopsia (no color) | #D5D5D5 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42EDCF
#42EDCF
oklch(85.4% 0.143 178)
- #FFB7CF
#FFB7CF
oklch(85.3% 0.088 357.4)
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 #42EDCF, closest first.
No curated palette has a color within ΔE 0.04 of #42EDCF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.030
- Turquoise #40E0D0 ΔE 0.038
- Bright Aqua #0BF9EA ΔE 0.040
- Bright Teal #01F9C6 ΔE 0.040
- Light Turquoise #7EF4CC ΔE 0.044
- Light Teal #90E4C1 ΔE 0.053
- Bright Light Blue #26F7FD ΔE 0.061
- Bright Turquoise #0FFEF9 ΔE 0.061
Use #42EDCF 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.