#39C0FF
Closest named color: Deep Sky Blue (#00BFFF). oklch(76.4% 0.143 234), rgb(57, 192, 255).
Aa
Black text reads best on this color (10.15:1).
About this color
#39C0FF is a medium-light, vivid blue. In OKLCH its lightness is 76%, its chroma 0.143 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.014 away. Black text reads best on it, at 10.15:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #39C0FF |
| RGB | rgb(57, 192, 255) |
| HSL | hsl(199, 100%, 61%) |
| OKLCH | oklch(76.4% 0.143 234) |
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 #39C0FF | 2.06:1 | Fails | Lc -44.4 | Non-text elements, placeholder text |
| Black text on #39C0FF | 10.15:1 | AAA | Lc 64.0 | Content text, not long reading |
| #39C0FF text on white | 2.06:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #39C0FF text on black | 10.15:1 | AAA | Lc -62.4 | 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
#AEE1FF
oklch(88.4% 0.067 234.3)
-
Step 300
300 (this color)
#39C0FF
oklch(76.4% 0.143 234)
-
Step 400
400
#00AEEE
oklch(70.7% 0.148 233.9)
-
Step 500
500
#0095CD
oklch(63.1% 0.132 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#39C0FF 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) | #A1BFFF | 0.089 |
| Deuteranopia (no green cones) | #87ACFE | 0.075 |
| Tritanopia (no blue cones) | #00D1D5 | 0.089 |
| Achromatopsia (no color) | #B4B4B4 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39C0FF
#39C0FF
oklch(76.4% 0.143 234)
- #F89752
#F89752
oklch(76.4% 0.144 54.1)
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 #39C0FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.014
- Bright Sky Blue #02CCFE ΔE 0.034
- Vivid Sky Blue #4CC9F0 ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.056
- Carolina Blue #8AB8FE ΔE 0.064
- Sky #82CAFC ΔE 0.064
- Light Sky Blue #87CEFA ΔE 0.075
- Sky Blue #87CEEB ΔE 0.081
Use #39C0FF 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.