#4570EC
Closest named color: Royal Blue (#4169E1). oklch(58.4% 0.193 266.1), rgb(69, 112, 236).
Aa
Black text reads best on this color (4.78:1).
About this color
#4570EC is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.193 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.024 away. Black text reads best on it, at 4.78:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.78:1 |
| White text | 4.39:1 |
Values
| HEX | #4570EC |
| RGB | rgb(69, 112, 236) |
| HSL | hsl(225, 81%, 60%) |
| OKLCH | oklch(58.4% 0.193 266.1) |
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 #4570EC | 4.39:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #4570EC | 4.78:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #4570EC text on white | 4.39:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #4570EC text on black | 4.78:1 | AA | Lc -31.7 | 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
#789DF7
oklch(70.8% 0.139 266)
-
Step 500
500
#5681F4
oklch(63.1% 0.178 266)
-
Step 600
600 (this color)
#4570EC
oklch(58.4% 0.193 266.1)
-
Step 700
700
#3055C5
oklch(49.1% 0.18 266)
-
Step 800
800
#28469F
oklch(42.6% 0.149 266.1)
-
Step 900
900
#243C7E
oklch(37.6% 0.116 266)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#4570EC 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) | #1680F0 | 0.044 |
| Deuteranopia (no green cones) | #0071EA | 0.036 |
| Tritanopia (no blue cones) | #008EA3 | 0.156 |
| Achromatopsia (no color) | #787878 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4570EC
#4570EC
oklch(58.4% 0.193 266.1)
- #9B7500
#9B7500
oklch(58.4% 0.12 85.8)
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 #4570EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.024
- Neon Blue #4361EE ΔE 0.036
- Cerulean Blue #056EEE ΔE 0.037
- Clear Blue #247AFD ΔE 0.037
- Cornflower #6A79F7 ΔE 0.053
- Bright Blue #0165FC ΔE 0.055
- Azul #1D5DEC ΔE 0.060
- Warm Blue #4B57DB ΔE 0.062
Use #4570EC 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.