#4D577D
Closest named color: Dusk (#4E5481). oklch(46.4% 0.063 272.4), rgb(77, 87, 125).
Aa
White text reads best on this color (7.05:1).
About this color
#4D577D is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.063 and its hue 272°. 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 7.05:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #4D577D |
| RGB | rgb(77, 87, 125) |
| HSL | hsl(228, 24%, 40%) |
| OKLCH | oklch(46.4% 0.063 272.4) |
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 #4D577D | 7.05:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #4D577D | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #4D577D text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #4D577D text on black | 2.97:1 | 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
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#B9C0D5
oklch(80.9% 0.031 271)
-
Step 400
400
#969FC0
oklch(70.7% 0.049 273.1)
-
Step 500
500
#7C87B0
oklch(63% 0.063 272.8)
-
Step 600
600
#65719C
oklch(55.6% 0.069 272)
-
Step 700
700 (this color)
#4D577D
oklch(46.4% 0.063 272.4)
-
Step 800
800
#454D6C
oklch(42.6% 0.053 272.9)
-
Step 900
900
#3A4058
oklch(37.6% 0.042 273.4)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#4D577D 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) | #4B5B7F | 0.011 |
| Deuteranopia (no green cones) | #47577C | 0.009 |
| Tritanopia (no blue cones) | #3F5E64 | 0.056 |
| Achromatopsia (no color) | #595959 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D577D
#4D577D
oklch(46.4% 0.063 272.4)
- #66582D
#66582D
oklch(46.4% 0.064 91.8)
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 #4D577D, 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 0.016
- YInMn Blue #415A77 ΔE 0.022
- Twilight #4E518B ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusky Blue #475F94 ΔE 0.039
- Denim #3B638C ΔE 0.040
Use #4D577D 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.