#55CEB2
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.5% 0.116 175.3), rgb(85, 206, 178).
Aa
Black text reads best on this color (10.85:1).
About this color
#55CEB2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.116 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.014 away. Black text reads best on it, at 10.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.85:1 |
| White text | 1.93:1 |
Values
| HEX | #55CEB2 |
| RGB | rgb(85, 206, 178) |
| HSL | hsl(166, 55%, 57%) |
| OKLCH | oklch(77.5% 0.116 175.3) |
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 #55CEB2 | 1.93:1 | Fails | Lc -41.1 | Non-text elements, placeholder text |
| Black text on #55CEB2 | 10.85:1 | AAA | Lc 67.1 | Content text, not long reading |
| #55CEB2 text on white | 1.93:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #55CEB2 text on black | 10.85:1 | 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
#EBF9F5
oklch(97.1% 0.016 177.1)
-
Step 100
100
#D4F2E9
oklch(93.7% 0.034 175.6)
-
Step 200
200
#ADE8D7
oklch(88.6% 0.064 175.1)
-
Step 300
300 (this color)
#55CEB2
oklch(77.5% 0.116 175.3)
-
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
#004E40
oklch(37.9% 0.071 175.3)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#55CEB2 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) | #C7C2B1 | 0.121 |
| Deuteranopia (no green cones) | #B5B5B4 | 0.116 |
| Tritanopia (no blue cones) | #00D0C6 | 0.034 |
| Achromatopsia (no color) | #BABABA | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55CEB2
#55CEB2
oklch(77.5% 0.116 175.3)
- #F096B9
#F096B9
oklch(77.5% 0.116 355.3)
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 #55CEB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.014
- Seafoam Blue #78D1B6 ΔE 0.031
- Medium Turquoise #48D1CC ΔE 0.035
- Pale Teal #82CBB2 ΔE 0.037
- Emerald #06D6A0 ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.048
- Turquoise #40E0D0 ΔE 0.054
- Tiffany Blue #94D2BD ΔE 0.062
Use #55CEB2 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.