#4B7FBB
Closest named color: Cool Blue (#4984B8). oklch(58.7% 0.108 253.1), rgb(75, 127, 187).
Aa
Black text reads best on this color (5.05:1).
About this color
#4B7FBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.108 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.016 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #4B7FBB |
| RGB | rgb(75, 127, 187) |
| HSL | hsl(212, 45%, 51%) |
| OKLCH | oklch(58.7% 0.108 253.1) |
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 #4B7FBB | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #4B7FBB | 5.05:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #4B7FBB text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #4B7FBB text on black | 5.05:1 | AA | Lc -33.2 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3E0
oklch(80.9% 0.049 253.3)
-
Step 400
400
#7EA4D1
oklch(70.8% 0.078 253.1)
-
Step 500
500
#5D8CC4
oklch(63% 0.099 253.5)
-
Step 600
600 (this color)
#4B7FBB
oklch(58.7% 0.108 253.1)
-
Step 700
700
#346398
oklch(49.2% 0.1 252.9)
-
Step 800
800
#2B517B
oklch(42.7% 0.083 252.4)
-
Step 900
900
#274363
oklch(37.6% 0.065 252.8)
-
Step 950
950
#17273A
oklch(26.8% 0.042 253.5)
#4B7FBB 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) | #6682BE | 0.033 |
| Deuteranopia (no green cones) | #5777BA | 0.024 |
| Tritanopia (no blue cones) | #008D94 | 0.092 |
| Achromatopsia (no color) | #7C7C7C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7FBB
#4B7FBB
oklch(58.7% 0.108 253.1)
- #A37126
#A37126
oklch(58.7% 0.109 73.1)
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 #4B7FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.016
- Steel Blue #4682B4 ΔE 0.016
- Off Blue #5684AE ΔE 0.030
- Windows Blue #3778BF ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.037
- Water Blue #0E87CC ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.046
- Nice Blue #107AB0 ΔE 0.047
Use #4B7FBB 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.