#4FBFF5
Closest named color: Deep Sky Blue (#00BFFF). oklch(76.3% 0.127 232.9), rgb(79, 191, 245).
Aa
Black text reads best on this color (10.10:1).
About this color
#4FBFF5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.127 and its hue 233°. 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 10.10:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.10:1 |
| White text | 2.07:1 |
Values
| HEX | #4FBFF5 |
| RGB | rgb(79, 191, 245) |
| HSL | hsl(200, 89%, 64%) |
| OKLCH | oklch(76.3% 0.127 232.9) |
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 #4FBFF5 | 2.07:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #4FBFF5 | 10.10:1 | AAA | Lc 63.6 | Content text, not long reading |
| #4FBFF5 text on white | 2.07:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #4FBFF5 text on black | 10.10:1 | AAA | Lc -62.0 | 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
#D3EFFF
oklch(93.7% 0.037 232.8)
-
Step 200
200
#ADE2FF
oklch(88.6% 0.068 232.4)
-
Step 300
300 (this color)
#4FBFF5
oklch(76.3% 0.127 232.9)
-
Step 400
400
#00AEEC
oklch(70.6% 0.146 233.1)
-
Step 500
500
#0095CB
oklch(63% 0.131 233.2)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#4FBFF5 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) | #A4BDF8 | 0.082 |
| Deuteranopia (no green cones) | #8EADF4 | 0.070 |
| Tritanopia (no blue cones) | #00CDD1 | 0.079 |
| Achromatopsia (no color) | #B4B4B4 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FBFF5
#4FBFF5
oklch(76.3% 0.127 232.9)
- #F19A61
#F19A61
oklch(76.3% 0.127 52.9)
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 #4FBFF5, 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 0.031
- Bright Sky Blue #02CCFE ΔE 0.037
- Lightblue #7BC8F6 ΔE 0.046
- Sky #82CAFC ΔE 0.056
- Carolina Blue #8AB8FE ΔE 0.057
- Light Sky Blue #87CEFA ΔE 0.067
- Sky Blue #87CEEB ΔE 0.070
Use #4FBFF5 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.