#4B90DC
Closest named color: Dark Sky Blue (#448EE4). oklch(64.3% 0.134 252.6), rgb(75, 144, 220).
Aa
Black text reads best on this color (6.32:1).
About this color
#4B90DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.134 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.015 away. Black text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #4B90DC |
| RGB | rgb(75, 144, 220) |
| HSL | hsl(211, 67%, 58%) |
| OKLCH | oklch(64.3% 0.134 252.6) |
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 #4B90DC | 3.32:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #4B90DC | 6.32:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #4B90DC text on white | 3.32:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #4B90DC text on black | 6.32:1 | AA | Lc -41.4 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#70A4E1
oklch(70.7% 0.106 253.1)
-
Step 500
500 (this color)
#4B90DC
oklch(64.3% 0.134 252.6)
-
Step 600
600
#2575C5
oklch(55.6% 0.145 252.3)
-
Step 700
700
#1762AB
oklch(49.2% 0.136 252.5)
-
Step 800
800
#17508A
oklch(42.7% 0.112 252.6)
-
Step 900
900
#1A436E
oklch(37.7% 0.087 252.1)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#4B90DC 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) | #6F95DF | 0.041 |
| Deuteranopia (no green cones) | #5A87DA | 0.026 |
| Tritanopia (no blue cones) | #00A2AC | 0.106 |
| Achromatopsia (no color) | #8D8D8D | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B90DC
#4B90DC
oklch(64.3% 0.134 252.6)
- #BE7E0D
#BE7E0D
oklch(64.4% 0.134 72.8)
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 #4B90DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.015
- Chefchaouen Blue #4895EF ΔE 0.029
- Cornflower Blue #6495ED ΔE 0.039
- Soft Blue #6488EA ΔE 0.040
- Water Blue #0E87CC ΔE 0.051
- Faded Blue #658CBB ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.057
- Cool Blue #4984B8 ΔE 0.059
Use #4B90DC 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.