#4EC5FA
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(77.8% 0.129 231.1), rgb(78, 197, 250).
Aa
Black text reads best on this color (10.69:1).
About this color
#4EC5FA is a medium-light, moderately saturated blue. In OKLCH its lightness is 78%, its chroma 0.129 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.021 away. Black text reads best on it, at 10.69:1.
| Hue family | Blues |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.69:1 |
| White text | 1.96:1 |
Values
| HEX | #4EC5FA |
| RGB | rgb(78, 197, 250) |
| HSL | hsl(198, 95%, 64%) |
| OKLCH | oklch(77.8% 0.129 231.1) |
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 #4EC5FA | 1.96:1 | Fails | Lc -41.9 | Non-text elements, placeholder text |
| Black text on #4EC5FA | 10.69:1 | AAA | Lc 66.4 | Content text, not long reading |
| #4EC5FA text on white | 1.96:1 | Fails | Lc 37.5 | Non-text elements, placeholder text |
| #4EC5FA text on black | 10.69:1 | AAA | Lc -64.9 | 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
#EBF8FF
oklch(97.1% 0.017 230.9)
-
Step 100
100
#D2EFFF
oklch(93.6% 0.037 231.9)
-
Step 200
200
#ABE2FF
oklch(88.5% 0.069 231.5)
-
Step 300
300 (this color)
#4EC5FA
oklch(77.8% 0.129 231.1)
-
Step 400
400
#00AFE9
oklch(70.7% 0.143 231.2)
-
Step 500
500
#0096C8
oklch(63.1% 0.127 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#004862
oklch(37.7% 0.076 230.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#4EC5FA 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) | #AAC2FD | 0.087 |
| Deuteranopia (no green cones) | #93B1F9 | 0.076 |
| Tritanopia (no blue cones) | #00D3D7 | 0.077 |
| Achromatopsia (no color) | #B9B9B9 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4EC5FA
#4EC5FA
oklch(77.8% 0.129 231.1)
- #F89E67
#F89E67
oklch(77.9% 0.129 51.3)
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 #4EC5FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.021
- Bright Sky Blue #02CCFE ΔE 0.026
- Deep Sky Blue #00BFFF ΔE 0.033
- Lightblue #7BC8F6 ΔE 0.037
- Sky #82CAFC ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.056
- Carolina Blue #8AB8FE ΔE 0.060
- Sky Blue #87CEEB ΔE 0.060
Use #4EC5FA 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.