#4585EF
Closest named color: Dark Sky Blue (#448EE4). oklch(62.8% 0.173 259.9), rgb(69, 133, 239).
Aa
Black text reads best on this color (5.85:1).
About this color
#4585EF is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.173 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.031 away. Black text reads best on it, at 5.85:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.85:1 |
| White text | 3.58:1 |
Values
| HEX | #4585EF |
| RGB | rgb(69, 133, 239) |
| HSL | hsl(217, 84%, 60%) |
| OKLCH | oklch(62.8% 0.173 259.9) |
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 #4585EF | 3.58:1 | AA large text | Lc -68.6 | Content text, not long reading |
| Black text on #4585EF | 5.85:1 | AA | Lc 41.0 | Non-text elements, placeholder text |
| #4585EF text on white | 3.58:1 | AA large text | Lc 63.1 | Content text, not long reading |
| #4585EF text on black | 5.85:1 | AA | Lc -38.6 | 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
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A1C2F8
oklch(80.9% 0.085 260.1)
-
Step 400
400
#6DA0F4
oklch(70.6% 0.135 260)
-
Step 500
500 (this color)
#4585EF
oklch(62.8% 0.173 259.9)
-
Step 600
600
#266DDF
oklch(55.7% 0.188 259.8)
-
Step 700
700
#195AC1
oklch(49.1% 0.174 259.9)
-
Step 800
800
#174A9C
oklch(42.6% 0.144 259.8)
-
Step 900
900
#1A3F7C
oklch(37.7% 0.112 259.9)
-
Step 950
950
#102549
oklch(26.9% 0.072 260.4)
#4585EF 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) | #4F90F3 | 0.032 |
| Deuteranopia (no green cones) | #2E80ED | 0.023 |
| Tritanopia (no blue cones) | #009EAE | 0.137 |
| Achromatopsia (no color) | #878787 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4585EF
#4585EF
oklch(62.8% 0.173 259.9)
- #B17E00
#B17E00
oklch(62.8% 0.13 80.1)
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 #4585EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.031
- Soft Blue #6488EA ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.043
- Clear Blue #247AFD ΔE 0.045
- Cornflower #6A79F7 ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.056
- Water Blue #0E87CC ΔE 0.064
Use #4585EF 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.