#4B6591
Closest named color: Dusky Blue (#475F94). oklch(50.5% 0.077 260.6), rgb(75, 101, 145).
Aa
White text reads best on this color (5.88:1).
About this color
#4B6591 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.077 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.021 away. White text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #4B6591 |
| RGB | rgb(75, 101, 145) |
| HSL | hsl(218, 32%, 43%) |
| OKLCH | oklch(50.5% 0.077 260.6) |
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 #4B6591 | 5.88:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #4B6591 | 3.56:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #4B6591 text on white | 5.88:1 | AA | Lc 79.3 | Fine for body text |
| #4B6591 text on black | 3.56:1 | AA large text | Lc -22.5 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B3C1D9
oklch(80.8% 0.037 261.3)
-
Step 400
400
#8BA2C6
oklch(70.7% 0.059 259.3)
-
Step 500
500
#6F8AB8
oklch(63.1% 0.076 260.9)
-
Step 600
600
#5774A4
oklch(55.7% 0.082 260.2)
-
Step 700
700 (this color)
#4B6591
oklch(50.5% 0.077 260.6)
-
Step 800
800
#3B4F72
oklch(42.7% 0.064 261.2)
-
Step 900
900
#32425C
oklch(37.7% 0.049 259.9)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#4B6591 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) | #546893 | 0.016 |
| Deuteranopia (no green cones) | #4D6190 | 0.011 |
| Tritanopia (no blue cones) | #2E6E75 | 0.067 |
| Achromatopsia (no color) | #646464 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6591
#4B6591
oklch(50.5% 0.077 260.6)
- #7C602D
#7C602D
oklch(50.6% 0.077 80.5)
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 #4B6591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.021
- Denim #3B638C ΔE 0.022
- Muted Blue #3B719F ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.038
- French Blue #436BAD ΔE 0.044
- Metallic Blue #4F738E ΔE 0.044
- Dull Blue #49759C ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.048
Use #4B6591 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.