#55C4DF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.7% 0.107 216.5), rgb(85, 196, 223).
Aa
Black text reads best on this color (10.34:1).
About this color
#55C4DF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.107 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.024 away. Black text reads best on it, at 10.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.34:1 |
| White text | 2.02:1 |
Values
| HEX | #55C4DF |
| RGB | rgb(85, 196, 223) |
| HSL | hsl(192, 68%, 60%) |
| OKLCH | oklch(76.7% 0.107 216.5) |
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 #55C4DF | 2.02:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #55C4DF | 10.34:1 | AAA | Lc 64.7 | Content text, not long reading |
| #55C4DF text on white | 2.02:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #55C4DF text on black | 10.34:1 | AAA | Lc -63.2 | 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
#EBF8FC
oklch(97.1% 0.015 218)
-
Step 100
100
#D4F0F7
oklch(93.7% 0.031 214.5)
-
Step 200
200
#ADE4F3
oklch(88.6% 0.06 216.4)
-
Step 300
300 (this color)
#55C4DF
oklch(76.7% 0.107 216.5)
-
Step 400
400
#00B3D3
oklch(70.7% 0.126 216.7)
-
Step 500
500
#009AB5
oklch(63.2% 0.112 216)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#55C4DF 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) | #B2BEE1 | 0.095 |
| Deuteranopia (no green cones) | #9EB0DF | 0.085 |
| Tritanopia (no blue cones) | #00CECC | 0.053 |
| Achromatopsia (no color) | #B6B6B6 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55C4DF
#55C4DF
oklch(76.7% 0.107 216.5)
- #EF9A83
#EF9A83
oklch(76.6% 0.108 35.9)
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 #55C4DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.024
- Bright Sky Blue #02CCFE ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.048
- Lightblue #7BC8F6 ΔE 0.049
- Medium Turquoise #48D1CC ΔE 0.053
- Aqua Blue #02D8E9 ΔE 0.055
- Sky Blue #87CEEB ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.059
Use #55C4DF 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.