#5BB3D5
Closest named color: Turquoise Blue (#06B1C4). oklch(72.5% 0.098 225.8), rgb(91, 179, 213).
Aa
Black text reads best on this color (8.85:1).
About this color
#5BB3D5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.098 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.049 away. Black text reads best on it, at 8.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.85:1 |
| White text | 2.37:1 |
Values
| HEX | #5BB3D5 |
| RGB | rgb(91, 179, 213) |
| HSL | hsl(197, 59%, 60%) |
| OKLCH | oklch(72.5% 0.098 225.8) |
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 #5BB3D5 | 2.37:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #5BB3D5 | 8.85:1 | AAA | Lc 57.4 | Large or bold text, headings |
| #5BB3D5 text on white | 2.37:1 | Fails | Lc 46.6 | Large or bold text, headings |
| #5BB3D5 text on black | 8.85:1 | AAA | Lc -55.5 | 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
#DEEDF3
oklch(93.7% 0.018 223.6)
-
Step 200
200
#C3DEEA
oklch(88.4% 0.033 226.4)
-
Step 300
300
#97C9DF
oklch(80.8% 0.061 226.8)
-
Step 400
400 (this color)
#5BB3D5
oklch(72.5% 0.098 225.8)
-
Step 500
500
#0097C1
oklch(63% 0.121 226.4)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#5BB3D5 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) | #A1B0D7 | 0.075 |
| Deuteranopia (no green cones) | #8FA3D5 | 0.065 |
| Tritanopia (no blue cones) | #00BDBE | 0.063 |
| Achromatopsia (no color) | #A8A8A8 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB3D5
#5BB3D5
oklch(72.5% 0.098 225.8)
- #DA9372
#DA9372
oklch(72.6% 0.098 45.7)
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 #5BB3D5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.049
- Greyblue #77A1B5 ΔE 0.059
- Vivid Sky Blue #4CC9F0 ΔE 0.062
- Bluegrey #85A3B2 ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.064
- Bluey Grey #89A0B0 ΔE 0.072
- Cool Steel #97A7B3 ΔE 0.074
- Light Grey Blue #9DBCD4 ΔE 0.076
Use #5BB3D5 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.