#4B5D91
Closest named color: Dusky Blue (#475F94). oklch(48.7% 0.087 268.6), rgb(75, 93, 145).
Aa
White text reads best on this color (6.41:1).
About this color
#4B5D91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.087 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.008 away. White text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #4B5D91 |
| RGB | rgb(75, 93, 145) |
| HSL | hsl(225, 32%, 43%) |
| OKLCH | oklch(48.7% 0.087 268.6) |
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 #4B5D91 | 6.41:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #4B5D91 | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #4B5D91 text on white | 6.41:1 | AA | Lc 81.8 | Fine for body text |
| #4B5D91 text on black | 3.27:1 | AA large text | Lc -20.1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B5C0DD
oklch(80.9% 0.043 269)
-
Step 400
400
#8F9FCB
oklch(70.6% 0.067 269.1)
-
Step 500
500
#7487BE
oklch(63% 0.086 269.2)
-
Step 600
600
#5C71AA
oklch(55.7% 0.092 267.9)
-
Step 700
700 (this color)
#4B5D91
oklch(48.7% 0.087 268.6)
-
Step 800
800
#3E4D77
oklch(42.7% 0.073 268.3)
-
Step 900
900
#354060
oklch(37.7% 0.057 269.1)
-
Step 950
950
#1F2638
oklch(27.1% 0.035 267.7)
#4B5D91 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) | #4A6293 | 0.014 |
| Deuteranopia (no green cones) | #435C90 | 0.011 |
| Tritanopia (no blue cones) | #306870 | 0.078 |
| Achromatopsia (no color) | #5F5F5F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5D91
#4B5D91
oklch(48.7% 0.087 268.6)
- #745C1B
#745C1B
oklch(48.7% 0.087 87.8)
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 #4B5D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.008
- Denim Blue #3B5B92 ΔE 0.022
- Denim #3B638C ΔE 0.027
- Dusk #4E5481 ΔE 0.032
- Twilight #4E518B ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.045
- Dusty Grape #545775 ΔE 0.045
Use #4B5D91 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.