#55DAD3
Closest named color: Turquoise (#40E0D0). oklch(81.4% 0.116 190.2), rgb(85, 218, 211).
Aa
Black text reads best on this color (12.35:1).
About this color
#55DAD3 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.116 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.021 away. Black text reads best on it, at 12.35:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.35:1 |
| White text | 1.69:1 |
Values
| HEX | #55DAD3 |
| RGB | rgb(85, 218, 211) |
| HSL | hsl(177, 64%, 59%) |
| OKLCH | oklch(81.4% 0.116 190.2) |
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 #55DAD3 | 1.69:1 | Fails | Lc -33.8 | Non-text elements, placeholder text |
| Black text on #55DAD3 | 12.35:1 | AAA | Lc 73.8 | Content text, not long reading |
| #55DAD3 text on white | 1.69:1 | Fails | Lc 30.1 | Non-text elements, placeholder text |
| #55DAD3 text on black | 12.35:1 | AAA | Lc -72.7 | Content text, not long reading |
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
#EAF9F8
oklch(97.1% 0.016 192.1)
-
Step 100
100
#D2F2EF
oklch(93.7% 0.034 189.7)
-
Step 200
200
#A8E7E3
oklch(88.4% 0.064 191.1)
-
Step 300
300 (this color)
#55DAD3
oklch(81.4% 0.116 190.2)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E98
oklch(63.1% 0.109 190)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
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
#002E2C
oklch(27.2% 0.047 190.2)
#55DAD3 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) | #CECFD3 | 0.122 |
| Deuteranopia (no green cones) | #BAC0D4 | 0.115 |
| Tritanopia (no blue cones) | #00DFD8 | 0.025 |
| Achromatopsia (no color) | #C6C6C6 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55DAD3
#55DAD3
oklch(81.4% 0.116 190.2)
- #FFA5B2
#FFA5B2
oklch(81.4% 0.107 10.3)
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 #55DAD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.021
- Medium Turquoise #48D1CC ΔE 0.027
- Aqua Blue #02D8E9 ΔE 0.040
- Seafoam Blue #78D1B6 ΔE 0.042
- Dark Turquoise #00CED1 ΔE 0.047
- Tiffany Blue #94D2BD ΔE 0.054
- Pale Teal #82CBB2 ΔE 0.055
- Medium Aquamarine #66CDAA ΔE 0.056
Use #55DAD3 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.