#4FBDF4
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.8% 0.127 233.8), rgb(79, 189, 244).
Aa
Black text reads best on this color (9.91:1).
About this color
#4FBDF4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.127 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.027 away. Black text reads best on it, at 9.91:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #4FBDF4 |
| RGB | rgb(79, 189, 244) |
| HSL | hsl(200, 88%, 63%) |
| OKLCH | oklch(75.8% 0.127 233.8) |
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 #4FBDF4 | 2.11:1 | Fails | Lc -45.8 | Large or bold text, headings |
| Black text on #4FBDF4 | 9.91:1 | AAA | Lc 62.8 | Content text, not long reading |
| #4FBDF4 text on white | 2.11:1 | Fails | Lc 41.2 | Non-text elements, placeholder text |
| #4FBDF4 text on black | 9.91:1 | AAA | Lc -61.1 | 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
#DCEDF7
oklch(93.6% 0.023 233.4)
-
Step 200
200
#BEDFF2
oklch(88.6% 0.044 233.2)
-
Step 300
300
#8DCAEC
oklch(81% 0.079 233.5)
-
Step 400
400 (this color)
#4FBDF4
oklch(75.8% 0.127 233.8)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#4FBDF4 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) | #A2BBF7 | 0.080 |
| Deuteranopia (no green cones) | #8CABF3 | 0.068 |
| Tritanopia (no blue cones) | #00CCCF | 0.082 |
| Achromatopsia (no color) | #B2B2B2 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FBDF4
#4FBDF4
oklch(75.8% 0.127 233.8)
- #EE995F
#EE995F
oklch(75.7% 0.126 53.9)
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 #4FBDF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.027
- Vivid Sky Blue #4CC9F0 ΔE 0.035
- Bright Sky Blue #02CCFE ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.057
- Sky #82CAFC ΔE 0.060
- Light Sky Blue #87CEFA ΔE 0.071
- Sky Blue #87CEEB ΔE 0.074
Use #4FBDF4 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.