#4573EF
Closest named color: Clear Blue (#247AFD). oklch(59.2% 0.194 265.5), rgb(69, 115, 239).
Aa
Black text reads best on this color (4.95:1).
About this color
#4573EF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.194 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.031 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.95:1 |
| White text | 4.24:1 |
Values
| HEX | #4573EF |
| RGB | rgb(69, 115, 239) |
| HSL | hsl(224, 84%, 60%) |
| OKLCH | oklch(59.2% 0.194 265.5) |
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 #4573EF | 4.24:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #4573EF | 4.95:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #4573EF text on white | 4.24:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #4573EF text on black | 4.95:1 | AA | Lc -32.8 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0FA
oklch(80.9% 0.087 265.8)
-
Step 400
400
#769DF7
oklch(70.6% 0.139 265.3)
-
Step 500
500
#5582F4
oklch(63.2% 0.178 265.4)
-
Step 600
600 (this color)
#4573EF
oklch(59.2% 0.194 265.5)
-
Step 700
700
#2E55C5
oklch(49% 0.181 265.5)
-
Step 800
800
#27479F
oklch(42.8% 0.148 265.4)
-
Step 900
900
#233C7E
oklch(37.6% 0.116 265.5)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#4573EF 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) | #1E83F3 | 0.042 |
| Deuteranopia (no green cones) | #0073ED | 0.035 |
| Tritanopia (no blue cones) | #0091A6 | 0.155 |
| Achromatopsia (no color) | #7B7B7B | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4573EF
#4573EF
oklch(59.2% 0.194 265.5)
- #9E7700
#9E7700
oklch(59.2% 0.121 85.6)
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 #4573EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.031
- Royal Blue #4169E1 ΔE 0.032
- Cerulean Blue #056EEE ΔE 0.040
- Neon Blue #4361EE ΔE 0.043
- Cornflower #6A79F7 ΔE 0.048
- Bright Blue #0165FC ΔE 0.058
- Azul #1D5DEC ΔE 0.066
- Soft Blue #6488EA ΔE 0.068
Use #4573EF 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.