#5BBAF6
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.6% 0.125 239.1), rgb(91, 186, 246).
Aa
Black text reads best on this color (9.79:1).
About this color
#5BBAF6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.125 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.034 away. Black text reads best on it, at 9.79:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.79:1 |
| White text | 2.14:1 |
Values
| HEX | #5BBAF6 |
| RGB | rgb(91, 186, 246) |
| HSL | hsl(203, 90%, 66%) |
| OKLCH | oklch(75.6% 0.125 239.1) |
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 #5BBAF6 | 2.14:1 | Fails | Lc -46.5 | Large or bold text, headings |
| Black text on #5BBAF6 | 9.79:1 | AAA | Lc 62.1 | Content text, not long reading |
| #5BBAF6 text on white | 2.14:1 | Fails | Lc 41.8 | Non-text elements, placeholder text |
| #5BBAF6 text on black | 9.79:1 | AAA | Lc -60.4 | 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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#C0DEF3
oklch(88.5% 0.043 238.5)
-
Step 300
300
#92C8EE
oklch(80.9% 0.078 239.6)
-
Step 400
400 (this color)
#5BBAF6
oklch(75.6% 0.125 239.1)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#5BBAF6 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) | #9EBAF9 | 0.068 |
| Deuteranopia (no green cones) | #89AAF5 | 0.057 |
| Tritanopia (no blue cones) | #00C9CE | 0.089 |
| Achromatopsia (no color) | #B1B1B1 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BBAF6
#5BBAF6
oklch(75.6% 0.125 239.1)
- #EA9B5A
#EA9B5A
oklch(75.6% 0.125 58.7)
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 #5BBAF6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.034
- Vivid Sky Blue #4CC9F0 ΔE 0.045
- Carolina Blue #8AB8FE ΔE 0.047
- Lightblue #7BC8F6 ΔE 0.051
- Bright Sky Blue #02CCFE ΔE 0.052
- Sky #82CAFC ΔE 0.059
- Light Sky Blue #87CEFA ΔE 0.072
- Pastel Blue #A2BFFE ΔE 0.076
Use #5BBAF6 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.