#55D0FF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(80.7% 0.126 227), rgb(85, 208, 255).
Aa
Black text reads best on this color (11.85:1).
About this color
#55D0FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.126 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.027 away. Black text reads best on it, at 11.85:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.85:1 |
| White text | 1.77:1 |
Values
| HEX | #55D0FF |
| RGB | rgb(85, 208, 255) |
| HSL | hsl(197, 100%, 67%) |
| OKLCH | oklch(80.7% 0.126 227) |
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 #55D0FF | 1.77:1 | Fails | Lc -36.2 | Non-text elements, placeholder text |
| Black text on #55D0FF | 11.85:1 | AAA | Lc 71.6 | Content text, not long reading |
| #55D0FF text on white | 1.77:1 | Fails | Lc 32.3 | Non-text elements, placeholder text |
| #55D0FF text on black | 11.85:1 | AAA | Lc -70.4 | 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
#D1EFFD
oklch(93.5% 0.037 227.6)
-
Step 200
200
#A8E3FD
oklch(88.4% 0.07 227)
-
Step 300
300 (this color)
#55D0FF
oklch(80.7% 0.126 227)
-
Step 400
400
#00B0E2
oklch(70.6% 0.137 227.2)
-
Step 500
500
#0097C2
oklch(63.1% 0.122 226.9)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#55D0FF 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) | #B7CCFF | 0.093 |
| Deuteranopia (no green cones) | #9FBBFE | 0.082 |
| Tritanopia (no blue cones) | #00DEDF | 0.074 |
| Achromatopsia (no color) | #C3C3C3 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55D0FF
#55D0FF
oklch(80.7% 0.126 227)
- #FFA87C
#FFA87C
oklch(80.8% 0.119 47.4)
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 #55D0FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.027
- Bright Sky Blue #02CCFE ΔE 0.031
- Lightblue #7BC8F6 ΔE 0.032
- Sky #82CAFC ΔE 0.036
- Light Sky Blue #87CEFA ΔE 0.039
- Sky Blue #87CEEB ΔE 0.045
- Aqua Blue #02D8E9 ΔE 0.052
- Deep Sky Blue #00BFFF ΔE 0.060
Use #55D0FF 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.