#4582DA
Closest named color: Dark Sky Blue (#448EE4). oklch(60.9% 0.148 257.8), rgb(69, 130, 218).
Aa
Black text reads best on this color (5.45:1).
About this color
#4582DA is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.148 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.033 away. Black text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.45:1 |
| White text | 3.84:1 |
Values
| HEX | #4582DA |
| RGB | rgb(69, 130, 218) |
| HSL | hsl(215, 67%, 56%) |
| OKLCH | oklch(60.9% 0.148 257.8) |
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 #4582DA | 3.84:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #4582DA | 5.45:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #4582DA text on white | 3.84:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #4582DA text on black | 5.45:1 | AA | Lc -36.0 | 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
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A4C3F0
oklch(81% 0.072 257.6)
-
Step 400
400
#72A2E8
oklch(70.7% 0.116 257.7)
-
Step 500
500 (this color)
#4582DA
oklch(60.9% 0.148 257.8)
-
Step 600
600
#2D71CF
oklch(55.6% 0.161 257.5)
-
Step 700
700
#205EB4
oklch(49.2% 0.15 257.8)
-
Step 800
800
#1D4D91
oklch(42.7% 0.124 257.9)
-
Step 900
900
#1D4174
oklch(37.7% 0.097 257.5)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#4582DA 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) | #5989DD | 0.029 |
| Deuteranopia (no green cones) | #427CD8 | 0.017 |
| Tritanopia (no blue cones) | #0096A3 | 0.118 |
| Achromatopsia (no color) | #828282 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4582DA
#4582DA
oklch(60.9% 0.148 257.8)
- #AC7700
#AC7700
oklch(60.8% 0.127 77.6)
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 #4582DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.033
- Water Blue #0E87CC ΔE 0.040
- Soft Blue #6488EA ΔE 0.044
- Windows Blue #3778BF ΔE 0.049
- Cool Blue #4984B8 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.056
- Steel Blue #4682B4 ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.062
Use #4582DA 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.