#00A4FD
Closest named color: Chefchaouen Blue (#4895EF). oklch(69.2% 0.171 244.1), rgb(0, 164, 253).
Aa
Black text reads best on this color (7.72:1).
About this color
#00A4FD is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.171 and its hue 244°. 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 7.72:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.72:1 |
| White text | 2.71:1 |
Values
| HEX | #00A4FD |
| RGB | rgb(0, 164, 253) |
| HSL | hsl(201, 100%, 50%) |
| OKLCH | oklch(69.2% 0.171 244.1) |
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 #00A4FD | 2.71:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #00A4FD | 7.72:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #00A4FD text on white | 2.71:1 | Fails | Lc 51.9 | Large or bold text, headings |
| #00A4FD text on black | 7.72:1 | AAA | Lc -50.0 | 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
#B9DEFE
oklch(88.5% 0.059 244.6)
-
Step 300
300
#85C8FF
oklch(80.9% 0.104 244.3)
-
Step 400
400 (this color)
#00A4FD
oklch(69.2% 0.171 244.1)
-
Step 500
500
#0090E0
oklch(63% 0.157 244.4)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#002944
oklch(27% 0.066 243.6)
#00A4FD 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) | #79A8FF | 0.072 |
| Deuteranopia (no green cones) | #5794FB | 0.051 |
| Tritanopia (no blue cones) | #00BAC4 | 0.118 |
| Achromatopsia (no color) | #9D9D9D | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00A4FD
#00A4FD
oklch(69.2% 0.171 244.1)
- #DD8300
#DD8300
oklch(69.1% 0.156 64)
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 #00A4FD, 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 0.058
- Dark Sky Blue #448EE4 ΔE 0.063
- Deep Sky Blue #00BFFF ΔE 0.074
- Soft Blue #6488EA ΔE 0.081
- Periwinkle Blue #8F99FB ΔE 0.098
- Water Blue #0E87CC ΔE 0.099
Use #00A4FD 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.