#4B8AE3
Closest named color: Dark Sky Blue (#448EE4). oklch(63.4% 0.149 257.4), rgb(75, 138, 227).
Aa
Black text reads best on this color (6.04:1).
About this color
#4B8AE3 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.149 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.011 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #4B8AE3 |
| RGB | rgb(75, 138, 227) |
| HSL | hsl(215, 73%, 59%) |
| OKLCH | oklch(63.4% 0.149 257.4) |
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 #4B8AE3 | 3.47:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #4B8AE3 | 6.04:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #4B8AE3 text on white | 3.47:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #4B8AE3 text on black | 6.04:1 | AA | Lc -39.7 | 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
#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
#A3C3F0
oklch(80.9% 0.073 256.9)
-
Step 400
400
#71A2E9
oklch(70.7% 0.117 257.6)
-
Step 500
500 (this color)
#4B8AE3
oklch(63.4% 0.149 257.4)
-
Step 600
600
#2B71D0
oklch(55.6% 0.162 257.3)
-
Step 700
700
#1E5EB4
oklch(49.1% 0.151 257.4)
-
Step 800
800
#1B4D92
oklch(42.7% 0.126 257.6)
-
Step 900
900
#1C4174
oklch(37.7% 0.097 257.1)
-
Step 950
950
#112644
oklch(26.9% 0.062 257.5)
#4B8AE3 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) | #6291E7 | 0.032 |
| Deuteranopia (no green cones) | #4B83E1 | 0.019 |
| Tritanopia (no blue cones) | #009FAB | 0.121 |
| Achromatopsia (no color) | #8A8A8A | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B8AE3
#4B8AE3
oklch(63.4% 0.149 257.4)
- #B67E00
#B67E00
oklch(63.4% 0.132 77.5)
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 #4B8AE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.011
- Soft Blue #6488EA ΔE 0.028
- Chefchaouen Blue #4895EF ΔE 0.031
- Cornflower Blue #6495ED ΔE 0.043
- Dodger Blue #1E90FF ΔE 0.046
- Water Blue #0E87CC ΔE 0.052
- Cornflower #6A79F7 ΔE 0.063
- Cool Blue #4984B8 ΔE 0.065
Use #4B8AE3 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.