#5BD1FD
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(81.1% 0.122 226), rgb(91, 209, 253).
Aa
Black text reads best on this color (11.98:1).
About this color
#5BD1FD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.122 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.029 away. Black text reads best on it, at 11.98:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.98:1 |
| White text | 1.75:1 |
Values
| HEX | #5BD1FD |
| RGB | rgb(91, 209, 253) |
| HSL | hsl(196, 98%, 67%) |
| OKLCH | oklch(81.1% 0.122 226) |
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 #5BD1FD | 1.75:1 | Fails | Lc -35.6 | Non-text elements, placeholder text |
| Black text on #5BD1FD | 11.98:1 | AAA | Lc 72.1 | Content text, not long reading |
| #5BD1FD text on white | 1.75:1 | Fails | Lc 31.7 | Non-text elements, placeholder text |
| #5BD1FD text on black | 11.98:1 | AAA | Lc -71.0 | 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
#EBF8FE
oklch(97.1% 0.016 227)
-
Step 100
100
#D2EFFC
oklch(93.5% 0.035 226.6)
-
Step 200
200
#A9E3FC
oklch(88.5% 0.068 226.4)
-
Step 300
300 (this color)
#5BD1FD
oklch(81.1% 0.122 226)
-
Step 400
400
#00B1E0
oklch(70.8% 0.135 225.5)
-
Step 500
500
#0097C1
oklch(63% 0.121 226.4)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#5BD1FD 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) | #B9CDFF | 0.092 |
| Deuteranopia (no green cones) | #A2BCFC | 0.081 |
| Tritanopia (no blue cones) | #00DEDF | 0.071 |
| Achromatopsia (no color) | #C4C4C4 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BD1FD
#5BD1FD
oklch(81.1% 0.122 226)
- #FFA981
#FFA981
oklch(81% 0.115 45.6)
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 #5BD1FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.029
- Lightblue #7BC8F6 ΔE 0.031
- Sky #82CAFC ΔE 0.034
- Light Sky Blue #87CEFA ΔE 0.035
- Bright Sky Blue #02CCFE ΔE 0.036
- Sky Blue #87CEEB ΔE 0.040
- Aqua Blue #02D8E9 ΔE 0.050
- Baby Blue #A2CFFE ΔE 0.065
Use #5BD1FD 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.