#5BBCDD
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(74.9% 0.102 223.1), rgb(91, 188, 221).
Aa
Black text reads best on this color (9.68:1).
About this color
#5BBCDD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.102 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.038 away. Black text reads best on it, at 9.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.68:1 |
| White text | 2.16:1 |
Values
| HEX | #5BBCDD |
| RGB | rgb(91, 188, 221) |
| HSL | hsl(195, 66%, 61%) |
| OKLCH | oklch(74.9% 0.102 223.1) |
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 #5BBCDD | 2.16:1 | Fails | Lc -47.1 | Large or bold text, headings |
| Black text on #5BBCDD | 9.68:1 | AAA | Lc 61.5 | Content text, not long reading |
| #5BBCDD text on white | 2.16:1 | Fails | Lc 42.4 | Non-text elements, placeholder text |
| #5BBCDD text on black | 9.68:1 | AAA | Lc -59.8 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C1DFEA
oklch(88.5% 0.035 221.9)
-
Step 300
300
#93CADF
oklch(80.8% 0.064 223.6)
-
Step 400
400 (this color)
#5BBCDD
oklch(74.9% 0.102 223.1)
-
Step 500
500
#0098BD
oklch(63.1% 0.118 223.1)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B38
oklch(26.8% 0.05 223.6)
#5BBCDD 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) | #A9B8DF | 0.082 |
| Deuteranopia (no green cones) | #96AADD | 0.073 |
| Tritanopia (no blue cones) | #00C6C6 | 0.061 |
| Achromatopsia (no color) | #B0B0B0 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BBCDD
#5BBCDD
oklch(74.9% 0.102 223.1)
- #E59879
#E59879
oklch(74.9% 0.103 42.7)
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 #5BBCDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.038
- Deep Sky Blue #00BFFF ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.056
- Bright Sky Blue #02CCFE ΔE 0.057
- Turquoise Blue #06B1C4 ΔE 0.063
- Light Cornflower Blue #98C1D9 ΔE 0.063
- Dark Turquoise #00CED1 ΔE 0.065
- Light Grey Blue #9DBCD4 ΔE 0.066
Use #5BBCDD 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.