#4DC1FD
Closest named color: Deep Sky Blue (#00BFFF). oklch(77% 0.134 235), rgb(77, 193, 253).
Aa
Black text reads best on this color (10.36:1).
About this color
#4DC1FD is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.134 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.026 away. Black text reads best on it, at 10.36:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.36:1 |
| White text | 2.02:1 |
Values
| HEX | #4DC1FD |
| RGB | rgb(77, 193, 253) |
| HSL | hsl(200, 98%, 65%) |
| OKLCH | oklch(77% 0.134 235) |
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 #4DC1FD | 2.02:1 | Fails | Lc -43.5 | Non-text elements, placeholder text |
| Black text on #4DC1FD | 10.36:1 | AAA | Lc 64.9 | Content text, not long reading |
| #4DC1FD text on white | 2.02:1 | Fails | Lc 39.0 | Non-text elements, placeholder text |
| #4DC1FD text on black | 10.36:1 | AAA | Lc -63.3 | 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
#ECF8FF
oklch(97.2% 0.016 233)
-
Step 100
100
#D4EEFF
oklch(93.5% 0.036 236.5)
-
Step 200
200
#AFE1FF
oklch(88.5% 0.066 234.8)
-
Step 300
300 (this color)
#4DC1FD
oklch(77% 0.134 235)
-
Step 400
400
#00ADF0
oklch(70.6% 0.15 235.3)
-
Step 500
500
#0095CE
oklch(63.2% 0.133 234.7)
-
Step 600
600
#007DAE
oklch(55.7% 0.118 234.9)
-
Step 700
700
#006993
oklch(49.2% 0.104 234.9)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#4DC1FD 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) | #A4C0FF | 0.082 |
| Deuteranopia (no green cones) | #8CAFFC | 0.068 |
| Tritanopia (no blue cones) | #00D1D5 | 0.087 |
| Achromatopsia (no color) | #B6B6B6 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4DC1FD
#4DC1FD
oklch(77% 0.134 235)
- #F59C5B
#F59C5B
oklch(77% 0.134 55.3)
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 #4DC1FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.026
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Bright Sky Blue #02CCFE ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.045
- Sky #82CAFC ΔE 0.053
- Carolina Blue #8AB8FE ΔE 0.055
- Light Sky Blue #87CEFA ΔE 0.064
- Sky Blue #87CEEB ΔE 0.071
Use #4DC1FD 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.