#55D8BA
Closest named color: Seafoam Blue (#78D1B6). oklch(80.2% 0.123 175.2), rgb(85, 216, 186).
Aa
Black text reads best on this color (11.91:1).
About this color
#55D8BA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.123 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Seafoam Blue (#78D1B6), ΔE 0.029 away. Black text reads best on it, at 11.91:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Seafoam Blue (#78D1B6) |
| Black text | 11.91:1 |
| White text | 1.76:1 |
Values
| HEX | #55D8BA |
| RGB | rgb(85, 216, 186) |
| HSL | hsl(166, 63%, 59%) |
| OKLCH | oklch(80.2% 0.123 175.2) |
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 #55D8BA | 1.76:1 | Fails | Lc -35.9 | Non-text elements, placeholder text |
| Black text on #55D8BA | 11.91:1 | AAA | Lc 71.9 | Content text, not long reading |
| #55D8BA text on white | 1.76:1 | Fails | Lc 32.0 | Non-text elements, placeholder text |
| #55D8BA text on black | 11.91:1 | AAA | Lc -70.7 | 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
#EBF9F5
oklch(97.1% 0.016 177.1)
-
Step 100
100
#D2F2E8
oklch(93.5% 0.036 174.7)
-
Step 200
200
#A9E9D7
oklch(88.6% 0.069 175.3)
-
Step 300
300 (this color)
#55D8BA
oklch(80.2% 0.123 175.2)
-
Step 400
400
#00BB9C
oklch(70.7% 0.133 175.1)
-
Step 500
500
#00A086
oklch(63% 0.118 175.6)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#55D8BA 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) | #D1CBB9 | 0.129 |
| Deuteranopia (no green cones) | #BEBDBC | 0.124 |
| Tritanopia (no blue cones) | #00DACF | 0.034 |
| Achromatopsia (no color) | #C3C3C3 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55D8BA
#55D8BA
oklch(80.2% 0.123 175.2)
- #FD9CC2
#FD9CC2
oklch(80.2% 0.124 355.2)
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 #55D8BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seafoam Blue #78D1B6 ΔE 0.029
- Turquoise #40E0D0 ΔE 0.031
- Medium Aquamarine #66CDAA ΔE 0.031
- Medium Turquoise #48D1CC ΔE 0.038
- Pale Teal #82CBB2 ΔE 0.045
- Aqua Marine #2EE8BB ΔE 0.045
- Emerald #06D6A0 ΔE 0.049
- Tiffany Blue #94D2BD ΔE 0.055
Use #55D8BA 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.