#01A4FF
Closest named color: Chefchaouen Blue (#4895EF). oklch(69.4% 0.173 244.6), rgb(1, 164, 255).
Aa
Black text reads best on this color (7.75:1).
About this color
#01A4FF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.173 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.044 away. Black text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #01A4FF |
| RGB | rgb(1, 164, 255) |
| HSL | hsl(201, 100%, 50%) |
| OKLCH | oklch(69.4% 0.173 244.6) |
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 #01A4FF | 2.70:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #01A4FF | 7.75:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #01A4FF text on white | 2.70:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #01A4FF text on black | 7.75:1 | AAA | Lc -50.1 | 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
#EEF7FF
oklch(97.2% 0.014 244.7)
-
Step 100
100
#D9EDFE
oklch(93.6% 0.031 243.7)
-
Step 200
200
#B9DEFF
oklch(88.5% 0.06 245.5)
-
Step 300
300
#86C8FF
oklch(80.9% 0.103 244.7)
-
Step 400
400 (this color)
#01A4FF
oklch(69.4% 0.173 244.6)
-
Step 500
500
#0090E1
oklch(63.1% 0.158 244.7)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#01A4FF 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) | #77A8FF | 0.070 |
| Deuteranopia (no green cones) | #5594FD | 0.050 |
| Tritanopia (no blue cones) | #00BAC5 | 0.119 |
| Achromatopsia (no color) | #9D9D9D | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01A4FF
#01A4FF
oklch(69.4% 0.173 244.6)
- #DD8400
#DD8400
oklch(69.3% 0.156 64.6)
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 #01A4FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.044
- Dodger Blue #1E90FF ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.075
- Soft Blue #6488EA ΔE 0.082
- Periwinkle Blue #8F99FB ΔE 0.097
- Water Blue #0E87CC ΔE 0.101
Use #01A4FF 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.