#4B7CBC
Closest named color: Windows Blue (#3778BF). oklch(58.1% 0.113 255.7), rgb(75, 124, 188).
Aa
Black text reads best on this color (4.90:1).
About this color
#4B7CBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.113 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.023 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.90:1 |
| White text | 4.27:1 |
Values
| HEX | #4B7CBC |
| RGB | rgb(75, 124, 188) |
| HSL | hsl(214, 46%, 52%) |
| OKLCH | oklch(58.1% 0.113 255.7) |
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 #4B7CBC | 4.27:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #4B7CBC | 4.90:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #4B7CBC text on white | 4.27:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #4B7CBC text on black | 4.90:1 | AA | Lc -32.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ABC3E2
oklch(80.9% 0.051 254.9)
-
Step 400
400
#7FA3D3
oklch(70.7% 0.081 255.8)
-
Step 500
500
#5E8BC7
oklch(63% 0.104 255.9)
-
Step 600
600 (this color)
#4B7CBC
oklch(58.1% 0.113 255.7)
-
Step 700
700
#35629B
oklch(49.2% 0.105 255.3)
-
Step 800
800
#2D507E
oklch(42.8% 0.087 255.9)
-
Step 900
900
#284365
oklch(37.8% 0.067 254.9)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#4B7CBC 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) | #6180BF | 0.029 |
| Deuteranopia (no green cones) | #5275BB | 0.020 |
| Tritanopia (no blue cones) | #008B93 | 0.096 |
| Achromatopsia (no color) | #7A7A7A | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7CBC
#4B7CBC
oklch(58.1% 0.113 255.7)
- #A0701B
#A0701B
oklch(58.1% 0.112 76.2)
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 #4B7CBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.023
- Steel Blue #4682B4 ΔE 0.024
- Cool Blue #4984B8 ΔE 0.025
- Off Blue #5684AE ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.042
- Water Blue #0E87CC ΔE 0.044
- Nice Blue #107AB0 ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.045
Use #4B7CBC 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.