#4ECAFC
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79% 0.129 228.7), rgb(78, 202, 252).
Aa
Black text reads best on this color (11.17:1).
About this color
#4ECAFC is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.129 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.017 away. Black text reads best on it, at 11.17:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.17:1 |
| White text | 1.87:1 |
Values
| HEX | #4ECAFC |
| RGB | rgb(78, 202, 252) |
| HSL | hsl(197, 97%, 65%) |
| OKLCH | oklch(79% 0.129 228.7) |
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 #4ECAFC | 1.87:1 | Fails | Lc -39.5 | Non-text elements, placeholder text |
| Black text on #4ECAFC | 11.17:1 | AAA | Lc 68.6 | Content text, not long reading |
| #4ECAFC text on white | 1.87:1 | Fails | Lc 35.3 | Non-text elements, placeholder text |
| #4ECAFC text on black | 11.17:1 | AAA | Lc -67.3 | 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
#EAF8FF
oklch(97.1% 0.018 229)
-
Step 100
100
#D1EFFE
oklch(93.5% 0.037 229.3)
-
Step 200
200
#A8E3FF
oklch(88.5% 0.071 228.9)
-
Step 300
300 (this color)
#4ECAFC
oklch(79% 0.129 228.7)
-
Step 400
400
#00B0E5
oklch(70.8% 0.139 228.7)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA6
oklch(55.7% 0.109 228.5)
-
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)
#4ECAFC 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) | #B0C7FE | 0.092 |
| Deuteranopia (no green cones) | #98B5FB | 0.080 |
| Tritanopia (no blue cones) | #00D8DA | 0.076 |
| Achromatopsia (no color) | #BDBDBD | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4ECAFC
#4ECAFC
oklch(79% 0.129 228.7)
- #FDA06E
#FDA06E
oklch(78.9% 0.129 48.4)
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 #4ECAFC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.017
- Bright Sky Blue #02CCFE ΔE 0.022
- Lightblue #7BC8F6 ΔE 0.034
- Sky #82CAFC ΔE 0.041
- Deep Sky Blue #00BFFF ΔE 0.043
- Light Sky Blue #87CEFA ΔE 0.048
- Sky Blue #87CEEB ΔE 0.053
- Aqua Blue #02D8E9 ΔE 0.057
Use #4ECAFC 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.