#42F0C8
Closest named color: Aqua Marine (#2EE8BB). oklch(85.9% 0.15 173.4), rgb(66, 240, 200).
Aa
Black text reads best on this color (14.52:1).
About this color
#42F0C8 is a light, vivid teal or cyan. In OKLCH its lightness is 86%, its chroma 0.150 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.027 away. Black text reads best on it, at 14.52:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.52:1 |
| White text | 1.44:1 |
Values
| HEX | #42F0C8 |
| RGB | rgb(66, 240, 200) |
| HSL | hsl(166, 85%, 60%) |
| OKLCH | oklch(85.9% 0.15 173.4) |
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 #42F0C8 | 1.44:1 | Fails | Lc -23.7 | Dividers and decoration only |
| Black text on #42F0C8 | 14.52:1 | AAA | Lc 82.9 | Fine for body text |
| #42F0C8 text on white | 1.44:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #42F0C8 text on black | 14.52:1 | AAA | Lc -82.6 | 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
#E5FBF4
oklch(97% 0.025 174.8)
-
Step 100
100
#C5F7E7
oklch(93.7% 0.055 173.6)
-
Step 200
200 (this color)
#42F0C8
oklch(85.9% 0.15 173.4)
-
Step 300
300
#00E0B8
oklch(80.9% 0.154 173.6)
-
Step 400
400
#00BB99
oklch(70.6% 0.135 173.4)
-
Step 500
500
#00A183
oklch(63.2% 0.121 173.2)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#42F0C8 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) | #E8E0C6 | 0.155 |
| Deuteranopia (no green cones) | #D1D0CB | 0.148 |
| Tritanopia (no blue cones) | #00F2E4 | 0.037 |
| Achromatopsia (no color) | #D7D7D7 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42F0C8
#42F0C8
oklch(85.9% 0.15 173.4)
- #FFB9D5
#FFB9D5
oklch(85.8% 0.088 353.4)
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 #42F0C8, closest first.
No curated palette has a color within ΔE 0.04 of #42F0C8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.027
- Bright Teal #01F9C6 ΔE 0.028
- Light Turquoise #7EF4CC ΔE 0.040
- Bright Aqua #0BF9EA ΔE 0.044
- Turquoise #40E0D0 ΔE 0.050
- Greenish Cyan #2AFEB7 ΔE 0.052
- Greenish Turquoise #00FBB0 ΔE 0.053
- Light Aquamarine #7BFDC7 ΔE 0.053
Use #42F0C8 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.