#01B0FE
Closest named color: Deep Sky Blue (#00BFFF). oklch(72% 0.162 239), rgb(1, 176, 254).
Aa
Black text reads best on this color (8.64:1).
About this color
#01B0FE is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.162 and its hue 239°. 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 8.64:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.64:1 |
| White text | 2.42:1 |
Values
| HEX | #01B0FE |
| RGB | rgb(1, 176, 254) |
| HSL | hsl(198, 99%, 50%) |
| OKLCH | oklch(72% 0.162 239) |
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 #01B0FE | 2.42:1 | Fails | Lc -52.1 | Large or bold text, headings |
| Black text on #01B0FE | 8.64:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #01B0FE text on white | 2.42:1 | Fails | Lc 47.1 | Large or bold text, headings |
| #01B0FE text on black | 8.64:1 | AAA | Lc -54.9 | 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
#EEF7FE
oklch(97.1% 0.013 241)
-
Step 100
100
#D9EDFC
oklch(93.6% 0.029 240.2)
-
Step 200
200
#B8DFFB
oklch(88.5% 0.056 239.5)
-
Step 300
300
#80CAFB
oklch(80.9% 0.101 238.8)
-
Step 400
400 (this color)
#01B0FE
oklch(72% 0.162 239)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#01B0FE 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) | #8AB1FF | 0.084 |
| Deuteranopia (no green cones) | #6B9DFD | 0.066 |
| Tritanopia (no blue cones) | #00C4CC | 0.105 |
| Achromatopsia (no color) | #A6A6A6 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01B0FE
#01B0FE
oklch(72% 0.162 239)
- #ED871E
#ED871E
oklch(72% 0.162 58.9)
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 #01B0FE, closest first.
No curated palette has a color within ΔE 0.04 of #01B0FE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.041
- Chefchaouen Blue #4895EF ΔE 0.071
- Cornflower Blue #6495ED ΔE 0.077
- Bright Sky Blue #02CCFE ΔE 0.078
- Vivid Sky Blue #4CC9F0 ΔE 0.084
- Dodger Blue #1E90FF ΔE 0.086
- Carolina Blue #8AB8FE ΔE 0.088
- Turquoise Blue #06B1C4 ΔE 0.088
Use #01B0FE 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.