#4582DE
Closest named color: Dark Sky Blue (#448EE4). oklch(61.1% 0.154 258.5), rgb(69, 130, 222).
Aa
Black text reads best on this color (5.50:1).
About this color
#4582DE is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.154 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.032 away. Black text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #4582DE |
| RGB | rgb(69, 130, 222) |
| HSL | hsl(216, 70%, 57%) |
| OKLCH | oklch(61.1% 0.154 258.5) |
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 #4582DE | 3.81:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #4582DE | 5.50:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #4582DE text on white | 3.81:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #4582DE text on black | 5.50:1 | AA | Lc -36.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A3C2F2
oklch(80.8% 0.076 259)
-
Step 400
400
#71A2EB
oklch(70.8% 0.12 258.1)
-
Step 500
500 (this color)
#4582DE
oklch(61.1% 0.154 258.5)
-
Step 600
600
#2D70D3
oklch(55.7% 0.167 258.5)
-
Step 700
700
#1F5DB7
oklch(49.1% 0.156 258.5)
-
Step 800
800
#1C4C94
oklch(42.6% 0.129 258.7)
-
Step 900
900
#1D4076
oklch(37.6% 0.101 258.9)
-
Step 950
950
#122645
oklch(27% 0.064 258.9)
#4582DE 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) | #578AE2 | 0.030 |
| Deuteranopia (no green cones) | #3E7CDC | 0.018 |
| Tritanopia (no blue cones) | #0097A5 | 0.122 |
| Achromatopsia (no color) | #828282 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4582DE
#4582DE
oklch(61.1% 0.154 258.5)
- #AC7800
#AC7800
oklch(61% 0.127 78.4)
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 #4582DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.032
- Soft Blue #6488EA ΔE 0.041
- Water Blue #0E87CC ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.054
- Windows Blue #3778BF ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.057
- Clear Blue #247AFD ΔE 0.058
- Cool Blue #4984B8 ΔE 0.060
Use #4582DE 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.