#4DB3FA
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.7% 0.139 242.5), rgb(77, 179, 250).
Aa
Black text reads best on this color (9.14:1).
About this color
#4DB3FA is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.139 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.036 away. Black text reads best on it, at 9.14:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.14:1 |
| White text | 2.29:1 |
Values
| HEX | #4DB3FA |
| RGB | rgb(77, 179, 250) |
| HSL | hsl(205, 95%, 64%) |
| OKLCH | oklch(73.7% 0.139 242.5) |
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 #4DB3FA | 2.29:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #4DB3FA | 9.14:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #4DB3FA text on white | 2.29:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #4DB3FA text on black | 9.14:1 | AAA | Lc -57.1 | 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
#BEDEF7
oklch(88.5% 0.048 241.7)
-
Step 300
300
#8EC8F5
oklch(80.9% 0.088 242.5)
-
Step 400
400 (this color)
#4DB3FA
oklch(73.7% 0.139 242.5)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#4DB3FA 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) | #93B4FD | 0.067 |
| Deuteranopia (no green cones) | #7BA4F9 | 0.052 |
| Tritanopia (no blue cones) | #00C4CC | 0.098 |
| Achromatopsia (no color) | #ABABAB | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4DB3FA
#4DB3FA
oklch(73.7% 0.139 242.5)
- #E79440
#E79440
oklch(73.7% 0.139 62.6)
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 #4DB3FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.036
- Carolina Blue #8AB8FE ΔE 0.060
- Vivid Sky Blue #4CC9F0 ΔE 0.066
- Bright Sky Blue #02CCFE ΔE 0.067
- Lightblue #7BC8F6 ΔE 0.075
- Cornflower Blue #6495ED ΔE 0.078
- Chefchaouen Blue #4895EF ΔE 0.081
- Sky #82CAFC ΔE 0.083
Use #4DB3FA 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.