#4B75D2
Closest named color: Windows Blue (#3778BF). oklch(57.9% 0.15 264), rgb(75, 117, 210).
Aa
Black text reads best on this color (4.77:1).
About this color
#4B75D2 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.150 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.037 away. Black text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.77:1 |
| White text | 4.39:1 |
Values
| HEX | #4B75D2 |
| RGB | rgb(75, 117, 210) |
| HSL | hsl(221, 60%, 56%) |
| OKLCH | oklch(57.9% 0.15 264) |
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 #4B75D2 | 4.39:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #4B75D2 | 4.77:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #4B75D2 text on white | 4.39:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #4B75D2 text on black | 4.77:1 | AA | Lc -31.4 | 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 600.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF3
oklch(88.6% 0.037 263.6)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7EA0E4
oklch(70.8% 0.107 263.5)
-
Step 500
500
#5E86DD
oklch(63.1% 0.139 264.2)
-
Step 600
600 (this color)
#4B75D2
oklch(57.9% 0.15 264)
-
Step 700
700
#375CAF
oklch(49.2% 0.139 263.9)
-
Step 800
800
#2D4B8E
oklch(42.7% 0.117 264)
-
Step 900
900
#283F71
oklch(37.6% 0.091 264)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#4B75D2 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) | #497FD6 | 0.026 |
| Deuteranopia (no green cones) | #3273D0 | 0.024 |
| Tritanopia (no blue cones) | #008A99 | 0.125 |
| Achromatopsia (no color) | #787878 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B75D2
#4B75D2
oklch(57.9% 0.15 264)
- #9B7300
#9B7300
oklch(58% 0.119 84.2)
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 #4B75D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.037
- Royal Blue #4169E1 ΔE 0.043
- Water Blue #0E87CC ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.060
- French Blue #436BAD ΔE 0.062
- Cerulean Blue #056EEE ΔE 0.064
- Cool Blue #4984B8 ΔE 0.064
- Steel Blue #4682B4 ΔE 0.065
Use #4B75D2 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.