#55CDBE
Closest named color: Medium Turquoise (#48D1CC). oklch(77.6% 0.11 184), rgb(85, 205, 190).
Aa
Black text reads best on this color (10.86:1).
About this color
#55CDBE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.110 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.019 away. Black text reads best on it, at 10.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.86:1 |
| White text | 1.93:1 |
Values
| HEX | #55CDBE |
| RGB | rgb(85, 205, 190) |
| HSL | hsl(173, 55%, 57%) |
| OKLCH | oklch(77.6% 0.11 184) |
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 #55CDBE | 1.93:1 | Fails | Lc -41.1 | Non-text elements, placeholder text |
| Black text on #55CDBE | 10.86:1 | AAA | Lc 67.1 | Content text, not long reading |
| #55CDBE text on white | 1.93:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #55CDBE text on black | 10.86:1 | AAA | Lc -65.7 | 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
#EBF9F6
oklch(97.1% 0.015 181.8)
-
Step 100
100
#D4F1EC
oklch(93.6% 0.031 184.2)
-
Step 200
200
#ACE7DD
oklch(88.5% 0.061 183.3)
-
Step 300
300 (this color)
#55CDBE
oklch(77.6% 0.11 184)
-
Step 400
400
#00B9A9
oklch(70.6% 0.125 184)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#55CDBE 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) | #C4C2BE | 0.117 |
| Deuteranopia (no green cones) | #B1B5BF | 0.109 |
| Tritanopia (no blue cones) | #00D1C8 | 0.027 |
| Achromatopsia (no color) | #BABABA | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55CDBE
#55CDBE
oklch(77.6% 0.11 184)
- #F198AE
#F198AE
oklch(77.6% 0.109 3.9)
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 #55CDBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.019
- Medium Aquamarine #66CDAA ΔE 0.029
- Seafoam Blue #78D1B6 ΔE 0.033
- Dark Turquoise #00CED1 ΔE 0.035
- Pale Teal #82CBB2 ΔE 0.037
- Turquoise #40E0D0 ΔE 0.051
- Tiffany Blue #94D2BD ΔE 0.059
- Aqua Blue #02D8E9 ΔE 0.060
Use #55CDBE 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.