#4588E5
Closest named color: Dark Sky Blue (#448EE4). oklch(62.8% 0.156 257.2), rgb(69, 136, 229).
Aa
Black text reads best on this color (5.90:1).
About this color
#4588E5 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.156 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.016 away. Black text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #4588E5 |
| RGB | rgb(69, 136, 229) |
| HSL | hsl(215, 75%, 58%) |
| OKLCH | oklch(62.8% 0.156 257.2) |
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 #4588E5 | 3.55:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #4588E5 | 5.90:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #4588E5 text on white | 3.55:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #4588E5 text on black | 5.90:1 | AA | Lc -38.9 | 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
#C8DBF6
oklch(88.6% 0.043 257.1)
-
Step 300
300
#A2C3F2
oklch(81% 0.076 257.2)
-
Step 400
400
#6EA2EC
oklch(70.7% 0.123 257.3)
-
Step 500
500 (this color)
#4588E5
oklch(62.8% 0.156 257.2)
-
Step 600
600
#2570D4
oklch(55.5% 0.17 257.3)
-
Step 700
700
#175DB8
oklch(49% 0.159 257.4)
-
Step 800
800
#164D95
oklch(42.8% 0.131 257.1)
-
Step 900
900
#1A4176
oklch(37.8% 0.101 257)
-
Step 950
950
#102645
oklch(26.9% 0.064 257.3)
#4588E5 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) | #5C90E9 | 0.033 |
| Deuteranopia (no green cones) | #4281E3 | 0.019 |
| Tritanopia (no blue cones) | #009EAB | 0.124 |
| Achromatopsia (no color) | #888888 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4588E5
#4588E5
oklch(62.8% 0.156 257.2)
- #B47C00
#B47C00
oklch(62.7% 0.131 77.1)
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 #4588E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.016
- Soft Blue #6488EA ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.050
- Water Blue #0E87CC ΔE 0.050
- Clear Blue #247AFD ΔE 0.060
- Cornflower #6A79F7 ΔE 0.060
Use #4588E5 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.