#5BB0ED
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.9% 0.121 242.2), rgb(91, 176, 237).
Aa
Black text reads best on this color (8.87:1).
About this color
#5BB0ED is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.121 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.048 away. Black text reads best on it, at 8.87:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.87:1 |
| White text | 2.36:1 |
Values
| HEX | #5BB0ED |
| RGB | rgb(91, 176, 237) |
| HSL | hsl(205, 80%, 64%) |
| OKLCH | oklch(72.9% 0.121 242.2) |
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 #5BB0ED | 2.36:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #5BB0ED | 8.87:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #5BB0ED text on white | 2.36:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #5BB0ED text on black | 8.87:1 | AAA | Lc -55.7 | Large or bold text, headings |
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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF3
oklch(88.5% 0.042 242.7)
-
Step 300
300
#95C7EE
oklch(80.8% 0.076 242.3)
-
Step 400
400 (this color)
#5BB0ED
oklch(72.9% 0.121 242.2)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#5BB0ED 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) | #95B1F0 | 0.061 |
| Deuteranopia (no green cones) | #81A2EC | 0.049 |
| Tritanopia (no blue cones) | #00BFC5 | 0.091 |
| Achromatopsia (no color) | #A8A8A8 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB0ED
#5BB0ED
oklch(72.9% 0.121 242.2)
- #DD9551
#DD9551
oklch(72.8% 0.121 62.3)
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 #5BB0ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.059
- Vivid Sky Blue #4CC9F0 ΔE 0.067
- Cornflower Blue #6495ED ΔE 0.073
- Lightblue #7BC8F6 ΔE 0.075
- Bright Sky Blue #02CCFE ΔE 0.075
- Turquoise Blue #06B1C4 ΔE 0.077
- Chefchaouen Blue #4895EF ΔE 0.079
Use #5BB0ED 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.