#5BC9FE
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79.3% 0.125 232.3), rgb(91, 201, 254).
Aa
Black text reads best on this color (11.23:1).
About this color
#5BC9FE is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.125 and its hue 232°. 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 11.23:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.23:1 |
| White text | 1.86:1 |
Values
| HEX | #5BC9FE |
| RGB | rgb(91, 201, 254) |
| HSL | hsl(200, 99%, 68%) |
| OKLCH | oklch(79.3% 0.125 232.3) |
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 #5BC9FE | 1.86:1 | Fails | Lc -39.3 | Non-text elements, placeholder text |
| Black text on #5BC9FE | 11.23:1 | AAA | Lc 68.8 | Content text, not long reading |
| #5BC9FE text on white | 1.86:1 | Fails | Lc 35.1 | Non-text elements, placeholder text |
| #5BC9FE text on black | 11.23:1 | AAA | Lc -67.5 | 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
#EBF8FF
oklch(97.1% 0.017 230.9)
-
Step 100
100
#D3EFFE
oklch(93.6% 0.036 231.1)
-
Step 200
200
#ACE2FF
oklch(88.5% 0.068 232)
-
Step 300
300 (this color)
#5BC9FE
oklch(79.3% 0.125 232.3)
-
Step 400
400
#00AEEB
oklch(70.6% 0.145 232.7)
-
Step 500
500
#0095CA
oklch(63% 0.13 232.7)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3D
oklch(27.1% 0.055 231.9)
#5BC9FE 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) | #AFC7FF | 0.083 |
| Deuteranopia (no green cones) | #98B6FD | 0.071 |
| Tritanopia (no blue cones) | #00D7DB | 0.080 |
| Achromatopsia (no color) | #BDBDBD | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BC9FE
#5BC9FE
oklch(79.3% 0.125 232.3)
- #FBA46D
#FBA46D
oklch(79.4% 0.125 52.3)
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 #5BC9FE, 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
- Lightblue #7BC8F6 ΔE 0.027
- Bright Sky Blue #02CCFE ΔE 0.031
- Sky #82CAFC ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.042
- Deep Sky Blue #00BFFF ΔE 0.047
- Sky Blue #87CEEB ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.057
Use #5BC9FE 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.