#5BB5DC
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(73.3% 0.103 228.8), rgb(91, 181, 220).
Aa
Black text reads best on this color (9.08:1).
About this color
#5BB5DC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.103 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.054 away. Black text reads best on it, at 9.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.08:1 |
| White text | 2.31:1 |
Values
| HEX | #5BB5DC |
| RGB | rgb(91, 181, 220) |
| HSL | hsl(198, 65%, 61%) |
| OKLCH | oklch(73.3% 0.103 228.8) |
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 #5BB5DC | 2.31:1 | Fails | Lc -50.2 | Large or bold text, headings |
| Black text on #5BB5DC | 9.08:1 | AAA | Lc 58.6 | Large or bold text, headings |
| #5BB5DC text on white | 2.31:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #5BB5DC text on black | 9.08:1 | AAA | Lc -56.7 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF4
oklch(93.7% 0.019 227.3)
-
Step 200
200
#C2DEEC
oklch(88.4% 0.035 229.3)
-
Step 300
300
#95C9E2
oklch(80.8% 0.065 229.2)
-
Step 400
400 (this color)
#5BB5DC
oklch(73.3% 0.103 228.8)
-
Step 500
500
#0097C5
oklch(63.2% 0.124 228.7)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#5BB5DC 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) | #A1B2DE | 0.074 |
| Deuteranopia (no green cones) | #8FA5DB | 0.064 |
| Tritanopia (no blue cones) | #00C0C2 | 0.067 |
| Achromatopsia (no color) | #AAAAAA | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB5DC
#5BB5DC
oklch(73.3% 0.103 228.8)
- #DD956E
#DD956E
oklch(73.3% 0.102 49.1)
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 #5BB5DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.054
- Deep Sky Blue #00BFFF ΔE 0.056
- Turquoise Blue #06B1C4 ΔE 0.056
- Greyblue #77A1B5 ΔE 0.068
- Lightblue #7BC8F6 ΔE 0.068
- Bright Sky Blue #02CCFE ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.071
- Bluegrey #85A3B2 ΔE 0.072
Use #5BB5DC 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.