#4B6BB9
Closest named color: French Blue (#436BAD). oklch(54.2% 0.128 265.5), rgb(75, 107, 185).
Aa
White text reads best on this color (5.11:1).
About this color
#4B6BB9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.128 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.022 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #4B6BB9 |
| RGB | rgb(75, 107, 185) |
| HSL | hsl(223, 44%, 51%) |
| OKLCH | oklch(54.2% 0.128 265.5) |
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 #4B6BB9 | 5.11:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #4B6BB9 | 4.10:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #4B6BB9 text on white | 5.11:1 | AA | Lc 75.1 | Fine for body text |
| #4B6BB9 text on black | 4.10:1 | AA large text | Lc -26.6 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC1E7
oklch(81% 0.057 265.2)
-
Step 400
400
#85A0DB
oklch(70.8% 0.092 265.2)
-
Step 500
500
#6787D1
oklch(63.2% 0.118 265.4)
-
Step 600
600 (this color)
#4B6BB9
oklch(54.2% 0.128 265.5)
-
Step 700
700
#405DA4
oklch(49.2% 0.119 265.5)
-
Step 800
800
#354C85
oklch(42.7% 0.099 265.8)
-
Step 900
900
#2E406A
oklch(37.7% 0.076 265.4)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#4B6BB9 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) | #4973BC | 0.021 |
| Deuteranopia (no green cones) | #3A69B7 | 0.020 |
| Tritanopia (no blue cones) | #007C89 | 0.111 |
| Achromatopsia (no color) | #6E6E6E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6BB9
#4B6BB9
oklch(54.2% 0.128 265.5)
- #8C6900
#8C6900
oklch(54.1% 0.111 85.5)
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 #4B6BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.022
- Mid Blue #276AB3 ΔE 0.035
- Windows Blue #3778BF ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.041
- Muted Blue #3B719F ΔE 0.051
- Nice Blue #107AB0 ΔE 0.058
- Iris #6258C4 ΔE 0.059
- Dull Blue #49759C ΔE 0.060
Use #4B6BB9 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.