#55DDDD
Closest named color: Turquoise (#40E0D0). oklch(82.4% 0.117 195.1), rgb(85, 221, 221).
Aa
Black text reads best on this color (12.77:1).
About this color
#55DDDD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.117 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.026 away. Black text reads best on it, at 12.77:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.77:1 |
| White text | 1.64:1 |
Values
| HEX | #55DDDD |
| RGB | rgb(85, 221, 221) |
| HSL | hsl(180, 67%, 60%) |
| OKLCH | oklch(82.4% 0.117 195.1) |
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 #55DDDD | 1.64:1 | Fails | Lc -31.9 | Non-text elements, placeholder text |
| Black text on #55DDDD | 12.77:1 | AAA | Lc 75.6 | Fine for body text |
| #55DDDD text on white | 1.64:1 | Fails | Lc 28.2 | Dividers and decoration only |
| #55DDDD text on black | 12.77:1 | AAA | Lc -74.7 | 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
#EAF9F9
oklch(97.1% 0.016 196.9)
-
Step 100
100
#D1F1F1
oklch(93.5% 0.033 196.6)
-
Step 200
200
#A7E7E6
oklch(88.5% 0.064 194.8)
-
Step 300
300 (this color)
#55DDDD
oklch(82.4% 0.117 195.1)
-
Step 400
400
#00B7B8
oklch(70.6% 0.12 195.5)
-
Step 500
500
#009D9E
oklch(63.1% 0.108 195.6)
-
Step 600
600
#008485
oklch(55.6% 0.095 195.7)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#002D2D
oklch(26.9% 0.046 194.8)
#55DDDD 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) | #CFD3DD | 0.121 |
| Deuteranopia (no green cones) | #BAC3DE | 0.114 |
| Tritanopia (no blue cones) | #00E4DD | 0.029 |
| Achromatopsia (no color) | #CACACA | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55DDDD
#55DDDD
oklch(82.4% 0.117 195.1)
- #FFABB1
#FFABB1
oklch(82.4% 0.099 14.8)
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 #55DDDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.026
- Aqua Blue #02D8E9 ΔE 0.036
- Medium Turquoise #48D1CC ΔE 0.038
- Seafoam Blue #78D1B6 ΔE 0.054
- Dark Turquoise #00CED1 ΔE 0.055
- Robin's Egg #6DEDFD ΔE 0.060
- Tiffany Blue #94D2BD ΔE 0.060
- Sky Blue #87CEEB ΔE 0.063
Use #55DDDD 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.