#53BBFA
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.7% 0.132 238.6), rgb(83, 187, 250).
Aa
Black text reads best on this color (9.85:1).
About this color
#53BBFA is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.132 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.028 away. Black text reads best on it, at 9.85:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.85:1 |
| White text | 2.13:1 |
Values
| HEX | #53BBFA |
| RGB | rgb(83, 187, 250) |
| HSL | hsl(203, 94%, 65%) |
| OKLCH | oklch(75.7% 0.132 238.6) |
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 #53BBFA | 2.13:1 | Fails | Lc -46.1 | Large or bold text, headings |
| Black text on #53BBFA | 9.85:1 | AAA | Lc 62.4 | Content text, not long reading |
| #53BBFA text on white | 2.13:1 | Fails | Lc 41.5 | Non-text elements, placeholder text |
| #53BBFA text on black | 9.85:1 | AAA | Lc -60.7 | 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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DCEDF8
oklch(93.7% 0.023 236)
-
Step 200
200
#BEDEF4
oklch(88.4% 0.046 238.1)
-
Step 300
300
#8EC9F0
oklch(81% 0.082 238.1)
-
Step 400
400 (this color)
#53BBFA
oklch(75.7% 0.132 238.6)
-
Step 500
500
#0093D4
oklch(63% 0.141 238.5)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#53BBFA 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) | #9EBBFD | 0.073 |
| Deuteranopia (no green cones) | #87AAF9 | 0.061 |
| Tritanopia (no blue cones) | #00CBD1 | 0.090 |
| Achromatopsia (no color) | #B2B2B2 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53BBFA
#53BBFA
oklch(75.7% 0.132 238.6)
- #EE9A54
#EE9A54
oklch(75.8% 0.132 58.6)
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 #53BBFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.028
- Vivid Sky Blue #4CC9F0 ΔE 0.045
- Bright Sky Blue #02CCFE ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.051
- Lightblue #7BC8F6 ΔE 0.053
- Sky #82CAFC ΔE 0.061
- Light Sky Blue #87CEFA ΔE 0.074
- Sky Blue #87CEEB ΔE 0.080
Use #53BBFA 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.