#4571F9
Closest named color: Clear Blue (#247AFD). oklch(59.5% 0.209 266.4), rgb(69, 113, 249).
Aa
Black text reads best on this color (4.98:1).
About this color
#4571F9 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.209 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.028 away. Black text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #4571F9 |
| RGB | rgb(69, 113, 249) |
| HSL | hsl(225, 94%, 62%) |
| OKLCH | oklch(59.5% 0.209 266.4) |
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 #4571F9 | 4.21:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #4571F9 | 4.98:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #4571F9 text on white | 4.21:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #4571F9 text on black | 4.98:1 | AA | Lc -33.1 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#759CFF
oklch(70.8% 0.151 266.4)
-
Step 500
500 (this color)
#4571F9
oklch(59.5% 0.209 266.4)
-
Step 600
600
#3661F5
oklch(55.6% 0.226 266.3)
-
Step 700
700
#2A4ED6
oklch(49% 0.212 266.5)
-
Step 800
800
#2341AD
oklch(42.6% 0.176 266.6)
-
Step 900
900
#203989
oklch(37.7% 0.137 266.5)
-
Step 950
950
#132250
oklch(26.9% 0.087 266.8)
#4571F9 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) | #0084FE | 0.050 |
| Deuteranopia (no green cones) | #0073F6 | 0.035 |
| Tritanopia (no blue cones) | #0092AA | 0.166 |
| Achromatopsia (no color) | #7B7B7B | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4571F9
#4571F9
oklch(59.5% 0.209 266.4)
- #9E7800
#9E7800
oklch(59.4% 0.121 86.3)
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 #4571F9, closest first.
No curated palette has a color within ΔE 0.04 of #4571F9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.028
- Neon Blue #4361EE ΔE 0.041
- Royal Blue #4169E1 ΔE 0.041
- Cerulean Blue #056EEE ΔE 0.042
- Cornflower #6A79F7 ΔE 0.049
- Bright Blue #0165FC ΔE 0.051
- Azul #1D5DEC ΔE 0.065
- Medium Slate Blue #7B68EE ΔE 0.069
Use #4571F9 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.