#4B577E
Closest named color: Dusk (#4E5481). oklch(46.3% 0.065 270.6), rgb(75, 87, 126).
Aa
White text reads best on this color (7.08:1).
About this color
#4B577E is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.065 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.012 away. White text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #4B577E |
| RGB | rgb(75, 87, 126) |
| HSL | hsl(226, 25%, 39%) |
| OKLCH | oklch(46.3% 0.065 270.6) |
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 #4B577E | 7.08:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #4B577E | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #4B577E text on white | 7.08:1 | AAA | Lc 84.5 | Fine for body text |
| #4B577E text on black | 2.96:1 | Fails | Lc -17.5 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B9C0D6
oklch(80.9% 0.032 271.6)
-
Step 400
400
#94A0C1
oklch(70.8% 0.05 269.4)
-
Step 500
500
#7A88B1
oklch(63.1% 0.064 269.9)
-
Step 600
600
#64719D
oklch(55.6% 0.07 271.3)
-
Step 700
700 (this color)
#4B577E
oklch(46.3% 0.065 270.6)
-
Step 800
800
#444D6D
oklch(42.6% 0.055 271.8)
-
Step 900
900
#394158
oklch(37.8% 0.041 269.5)
-
Step 950
950
#212634
oklch(27% 0.027 269.3)
#4B577E 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) | #4A5B80 | 0.011 |
| Deuteranopia (no green cones) | #45567D | 0.009 |
| Tritanopia (no blue cones) | #3B5F65 | 0.059 |
| Achromatopsia (no color) | #585858 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B577E
#4B577E
oklch(46.3% 0.065 270.6)
- #67572B
#67572B
oklch(46.2% 0.065 89.8)
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 #4B577E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.012
- Dusty Grape #545775 ΔE 0.019
- YInMn Blue #415A77 ΔE 0.021
- Twilight #4E518B ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.038
- Denim #3B638C ΔE 0.039
Use #4B577E 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.