#4583EC
Closest named color: Dark Sky Blue (#448EE4). oklch(62.2% 0.171 260.3), rgb(69, 131, 236).
Aa
Black text reads best on this color (5.71:1).
About this color
#4583EC is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.171 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.034 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #4583EC |
| RGB | rgb(69, 131, 236) |
| HSL | hsl(218, 81%, 60%) |
| OKLCH | oklch(62.2% 0.171 260.3) |
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 #4583EC | 3.67:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #4583EC | 5.71:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #4583EC text on white | 3.67:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #4583EC text on black | 5.71:1 | AA | Lc -37.7 | 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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFB
oklch(93.7% 0.024 259.8)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F7
oklch(80.9% 0.083 260.4)
-
Step 400
400
#6EA0F3
oklch(70.6% 0.134 260.1)
-
Step 500
500 (this color)
#4583EC
oklch(62.2% 0.171 260.3)
-
Step 600
600
#296DDE
oklch(55.7% 0.186 260.2)
-
Step 700
700
#1C5AC0
oklch(49.1% 0.172 260.2)
-
Step 800
800
#194A9C
oklch(42.7% 0.144 260.3)
-
Step 900
900
#1B3F7C
oklch(37.8% 0.112 260.3)
-
Step 950
950
#112548
oklch(26.9% 0.07 260.7)
#4583EC 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) | #4E8EF0 | 0.031 |
| Deuteranopia (no green cones) | #2D7EEA | 0.024 |
| Tritanopia (no blue cones) | #009CAC | 0.136 |
| Achromatopsia (no color) | #858585 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4583EC
#4583EC
oklch(62.2% 0.171 260.3)
- #AF7D00
#AF7D00
oklch(62.3% 0.129 80.4)
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 #4583EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.034
- Soft Blue #6488EA ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.042
- Clear Blue #247AFD ΔE 0.044
- Cornflower #6A79F7 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.060
- Water Blue #0E87CC ΔE 0.061
Use #4583EC 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.