#55CDDD
Closest named color: Medium Turquoise (#48D1CC). oklch(78.7% 0.108 207.4), rgb(85, 205, 221).
Aa
Black text reads best on this color (11.16:1).
About this color
#55CDDD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.108 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.032 away. Black text reads best on it, at 11.16:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 11.16:1 |
| White text | 1.88:1 |
Values
| HEX | #55CDDD |
| RGB | rgb(85, 205, 221) |
| HSL | hsl(187, 67%, 60%) |
| OKLCH | oklch(78.7% 0.108 207.4) |
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 #55CDDD | 1.88:1 | Fails | Lc -39.6 | Non-text elements, placeholder text |
| Black text on #55CDDD | 11.16:1 | AAA | Lc 68.5 | Content text, not long reading |
| #55CDDD text on white | 1.88:1 | Fails | Lc 35.4 | Non-text elements, placeholder text |
| #55CDDD text on black | 11.16:1 | AAA | Lc -67.1 | 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
#EBF8FA
oklch(97% 0.014 207.9)
-
Step 100
100
#D3F0F5
oklch(93.6% 0.031 209.1)
-
Step 200
200
#ABE5EE
oklch(88.5% 0.06 208)
-
Step 300
300 (this color)
#55CDDD
oklch(78.7% 0.108 207.4)
-
Step 400
400
#00B5C7
oklch(70.7% 0.121 207.4)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#55CDDD 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) | #BDC6DE | 0.105 |
| Deuteranopia (no green cones) | #A8B6DD | 0.096 |
| Tritanopia (no blue cones) | #00D5D2 | 0.041 |
| Achromatopsia (no color) | #BDBDBD | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55CDDD
#55CDDD
oklch(78.7% 0.108 207.4)
- #F79E93
#F79E93
oklch(78.6% 0.108 27.4)
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 #55CDDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.032
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Aqua Blue #02D8E9 ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.035
- Sky Blue #87CEEB ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.053
- Lightblue #7BC8F6 ΔE 0.054
- Turquoise #40E0D0 ΔE 0.062
Use #55CDDD 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.