#4D577C
Closest named color: Dusk (#4E5481). oklch(46.4% 0.062 272.2), rgb(77, 87, 124).
Aa
White text reads best on this color (7.07:1).
About this color
#4D577C is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.062 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.014 away. White text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #4D577C |
| RGB | rgb(77, 87, 124) |
| HSL | hsl(227, 23%, 39%) |
| OKLCH | oklch(46.4% 0.062 272.2) |
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 #4D577C | 7.07:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #4D577C | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #4D577C text on white | 7.07:1 | AAA | Lc 84.5 | Fine for body text |
| #4D577C 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
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#969FBF
oklch(70.6% 0.048 272.8)
-
Step 500
500
#7C88AF
oklch(63.2% 0.061 271.3)
-
Step 600
600
#66719B
oklch(55.6% 0.067 272.8)
-
Step 700
700 (this color)
#4D577C
oklch(46.4% 0.062 272.2)
-
Step 800
800
#454D6B
oklch(42.6% 0.051 272.6)
-
Step 900
900
#3A4057
oklch(37.6% 0.04 273)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#4D577C 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) | #4B5B7E | 0.011 |
| Deuteranopia (no green cones) | #47577B | 0.009 |
| Tritanopia (no blue cones) | #3F5E64 | 0.055 |
| Achromatopsia (no color) | #585858 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D577C
#4D577C
oklch(46.4% 0.062 272.2)
- #65582F
#65582F
oklch(46.3% 0.061 92.3)
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 #4D577C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.014
- Dusty Grape #545775 ΔE 0.015
- YInMn Blue #415A77 ΔE 0.021
- Twilight #4E518B ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.040
- Denim #3B638C ΔE 0.041
Use #4D577C 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.