#73BBDF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.8% 0.089 231.3), rgb(115, 187, 223).
Aa
Black text reads best on this color (9.90:1).
About this color
#73BBDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.089 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.044 away. Black text reads best on it, at 9.90:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.90:1 |
| White text | 2.12:1 |
Values
| HEX | #73BBDF |
| RGB | rgb(115, 187, 223) |
| HSL | hsl(200, 63%, 66%) |
| OKLCH | oklch(75.8% 0.089 231.3) |
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 #73BBDF | 2.12:1 | Fails | Lc -46.1 | Large or bold text, headings |
| Black text on #73BBDF | 9.90:1 | AAA | Lc 62.5 | Content text, not long reading |
| #73BBDF text on white | 2.12:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #73BBDF text on black | 9.90:1 | AAA | Lc -60.8 | 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 300.
-
Step 50
50
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF8
oklch(93.5% 0.025 233)
-
Step 200
200
#B9E0F4
oklch(88.5% 0.049 230.3)
-
Step 300
300 (this color)
#73BBDF
oklch(75.8% 0.089 231.3)
-
Step 400
400
#07AFE9
oklch(70.8% 0.142 231.4)
-
Step 500
500
#0096C8
oklch(63.1% 0.127 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#73BBDF 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) | #A9B9E1 | 0.061 |
| Deuteranopia (no green cones) | #9AADDF | 0.054 |
| Tritanopia (no blue cones) | #3CC5C7 | 0.065 |
| Achromatopsia (no color) | #B2B2B2 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #73BBDF
#73BBDF
oklch(75.8% 0.089 231.3)
- #DEA17C
#DEA17C
oklch(75.9% 0.088 52.2)
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 #73BBDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.046
- Light Grey Blue #9DBCD4 ΔE 0.048
- Sky #82CAFC ΔE 0.055
- Carolina Blue #8AB8FE ΔE 0.056
- Sky Blue #87CEEB ΔE 0.058
- Light Sky Blue #87CEFA ΔE 0.063
Use #73BBDF 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.