#4DB1FC
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.4% 0.143 244.4), rgb(77, 177, 252).
Aa
Black text reads best on this color (9.01:1).
About this color
#4DB1FC is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.143 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.041 away. Black text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.01:1 |
| White text | 2.33:1 |
Values
| HEX | #4DB1FC |
| RGB | rgb(77, 177, 252) |
| HSL | hsl(206, 97%, 65%) |
| OKLCH | oklch(73.4% 0.143 244.4) |
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 #4DB1FC | 2.33:1 | Fails | Lc -50.5 | Large or bold text, headings |
| Black text on #4DB1FC | 9.01:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #4DB1FC text on white | 2.33:1 | Fails | Lc 45.6 | Large or bold text, headings |
| #4DB1FC text on black | 9.01:1 | AAA | Lc -56.4 | Large or bold text, headings |
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
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BEDDF8
oklch(88.4% 0.05 244.7)
-
Step 300
300
#8FC7F7
oklch(80.9% 0.09 245.1)
-
Step 400
400 (this color)
#4DB1FC
oklch(73.4% 0.143 244.4)
-
Step 500
500
#0090E0
oklch(63% 0.157 244.4)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#4DB1FC 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) | #8FB3FF | 0.064 |
| Deuteranopia (no green cones) | #77A2FB | 0.050 |
| Tritanopia (no blue cones) | #00C3CB | 0.103 |
| Achromatopsia (no color) | #AAAAAA | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4DB1FC
#4DB1FC
oklch(73.4% 0.143 244.4)
- #E69338
#E69338
oklch(73.3% 0.143 64.1)
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 #4DB1FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.041
- Carolina Blue #8AB8FE ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.073
- Bright Sky Blue #02CCFE ΔE 0.073
- Vivid Sky Blue #4CC9F0 ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.075
- Lightblue #7BC8F6 ΔE 0.081
- Periwinkle Blue #8F99FB ΔE 0.084
Use #4DB1FC 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.