#4B5E99
Closest named color: Dusky Blue (#475F94). oklch(49.4% 0.098 269.1), rgb(75, 94, 153).
Aa
White text reads best on this color (6.24:1).
About this color
#4B5E99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.098 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.011 away. White text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.36:1 |
| White text | 6.24:1 |
Values
| HEX | #4B5E99 |
| RGB | rgb(75, 94, 153) |
| HSL | hsl(225, 34%, 45%) |
| OKLCH | oklch(49.4% 0.098 269.1) |
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 #4B5E99 | 6.24:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #4B5E99 | 3.36:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #4B5E99 text on white | 6.24:1 | AA | Lc 81.0 | Fine for body text |
| #4B5E99 text on black | 3.36:1 | AA large text | Lc -20.8 | 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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EB
oklch(88.5% 0.026 268.8)
-
Step 300
300
#B4C0E0
oklch(80.9% 0.047 269.1)
-
Step 400
400
#8D9FD1
oklch(70.7% 0.076 269.1)
-
Step 500
500
#7287C4
oklch(63.2% 0.095 269.1)
-
Step 600
600
#5A70B1
oklch(55.7% 0.105 268.7)
-
Step 700
700 (this color)
#4B5E99
oklch(49.4% 0.098 269.1)
-
Step 800
800
#3D4C7B
oklch(42.6% 0.081 269.4)
-
Step 900
900
#344063
oklch(37.8% 0.062 268.9)
-
Step 950
950
#1E253A
oklch(26.8% 0.041 269.5)
#4B5E99 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) | #47649B | 0.017 |
| Deuteranopia (no green cones) | #3F5D98 | 0.016 |
| Tritanopia (no blue cones) | #2A6B74 | 0.088 |
| Achromatopsia (no color) | #606060 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5E99
#4B5E99
oklch(49.4% 0.098 269.1)
- #785E0A
#785E0A
oklch(49.5% 0.098 89)
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 #4B5E99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.011
- Denim Blue #3B5B92 ΔE 0.025
- Denim #3B638C ΔE 0.034
- Twilight #4E518B ΔE 0.039
- Dusk #4E5481 ΔE 0.043
- French Blue #436BAD ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.046
- Muted Blue #3B719F ΔE 0.054
Use #4B5E99 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.