#55D2FF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(81.2% 0.126 225.5), rgb(85, 210, 255).
Aa
Black text reads best on this color (12.04:1).
About this color
#55D2FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.126 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.030 away. Black text reads best on it, at 12.04:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 12.04:1 |
| White text | 1.74:1 |
Values
| HEX | #55D2FF |
| RGB | rgb(85, 210, 255) |
| HSL | hsl(196, 100%, 67%) |
| OKLCH | oklch(81.2% 0.126 225.5) |
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 #55D2FF | 1.74:1 | Fails | Lc -35.3 | Non-text elements, placeholder text |
| Black text on #55D2FF | 12.04:1 | AAA | Lc 72.5 | Content text, not long reading |
| #55D2FF text on white | 1.74:1 | Fails | Lc 31.4 | Non-text elements, placeholder text |
| #55D2FF text on black | 12.04:1 | AAA | Lc -71.3 | 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
#EAF8FE
oklch(97% 0.017 225.2)
-
Step 100
100
#D1F0FD
oklch(93.7% 0.037 225)
-
Step 200
200
#A7E4FD
oklch(88.6% 0.071 225.2)
-
Step 300
300 (this color)
#55D2FF
oklch(81.2% 0.126 225.5)
-
Step 400
400
#00B1E0
oklch(70.8% 0.135 225.5)
-
Step 500
500
#0097C0
oklch(63% 0.12 225.7)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005871
oklch(42.8% 0.081 225.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#55D2FF 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) | #B9CEFF | 0.095 |
| Deuteranopia (no green cones) | #A2BDFE | 0.084 |
| Tritanopia (no blue cones) | #00DFE1 | 0.069 |
| Achromatopsia (no color) | #C4C4C4 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55D2FF
#55D2FF
oklch(81.2% 0.126 225.5)
- #FFAA82
#FFAA82
oklch(81.2% 0.114 45.9)
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 #55D2FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.030
- Bright Sky Blue #02CCFE ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.035
- Sky #82CAFC ΔE 0.038
- Light Sky Blue #87CEFA ΔE 0.039
- Sky Blue #87CEEB ΔE 0.044
- Aqua Blue #02D8E9 ΔE 0.049
- Deep Sky Blue #00BFFF ΔE 0.065
Use #55D2FF 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.