#3FC0FB
Closest named color: Deep Sky Blue (#00BFFF). oklch(76.3% 0.138 232.9), rgb(63, 192, 251).
Aa
Black text reads best on this color (10.14:1).
About this color
#3FC0FB is a medium-light, moderately saturated blue. In OKLCH its lightness is 76%, its chroma 0.138 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.018 away. Black text reads best on it, at 10.14:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.14:1 |
| White text | 2.07:1 |
Values
| HEX | #3FC0FB |
| RGB | rgb(63, 192, 251) |
| HSL | hsl(199, 96%, 62%) |
| OKLCH | oklch(76.3% 0.138 232.9) |
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 #3FC0FB | 2.07:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #3FC0FB | 10.14:1 | AAA | Lc 63.9 | Content text, not long reading |
| #3FC0FB text on white | 2.07:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #3FC0FB text on black | 10.14:1 | AAA | Lc -62.3 | 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
#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)
#3FC0FB
oklch(76.3% 0.138 232.9)
-
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)
#3FC0FB 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) | #A3BEFE | 0.089 |
| Deuteranopia (no green cones) | #89ACFA | 0.075 |
| Tritanopia (no blue cones) | #00D0D4 | 0.084 |
| Achromatopsia (no color) | #B4B4B4 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC0FB
#3FC0FB
oklch(76.3% 0.138 232.9)
- #F69859
#F69859
oklch(76.4% 0.138 53)
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 #3FC0FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.018
- Bright Sky Blue #02CCFE ΔE 0.033
- Vivid Sky Blue #4CC9F0 ΔE 0.035
- Lightblue #7BC8F6 ΔE 0.053
- Sky #82CAFC ΔE 0.061
- Carolina Blue #8AB8FE ΔE 0.062
- Light Sky Blue #87CEFA ΔE 0.072
- Sky Blue #87CEEB ΔE 0.077
Use #3FC0FB 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.