#4F587F
Closest named color: Dusk (#4E5481). oklch(46.9% 0.064 273.7), rgb(79, 88, 127).
Aa
White text reads best on this color (6.91:1).
About this color
#4F587F is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.064 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.013 away. White text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #4F587F |
| RGB | rgb(79, 88, 127) |
| HSL | hsl(229, 23%, 40%) |
| OKLCH | oklch(46.9% 0.064 273.7) |
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 #4F587F | 6.91:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #4F587F | 3.03:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #4F587F text on white | 6.91:1 | AA | Lc 83.9 | Fine for body text |
| #4F587F text on black | 3.03:1 | AA large text | Lc -18.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#969FC0
oklch(70.7% 0.049 273.1)
-
Step 500
500
#7D87B1
oklch(63.1% 0.064 274)
-
Step 600
600
#66719C
oklch(55.7% 0.068 273)
-
Step 700
700 (this color)
#4F587F
oklch(46.9% 0.064 273.7)
-
Step 800
800
#464D6C
oklch(42.7% 0.052 274.2)
-
Step 900
900
#3A4058
oklch(37.6% 0.042 273.4)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#4F587F 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) | #4B5C81 | 0.012 |
| Deuteranopia (no green cones) | #48587E | 0.010 |
| Tritanopia (no blue cones) | #416066 | 0.058 |
| Achromatopsia (no color) | #5A5A5A | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F587F
#4F587F
oklch(46.9% 0.064 273.7)
- #675A2E
#675A2E
oklch(47% 0.064 93.3)
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 #4F587F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.013
- Dusty Grape #545775 ΔE 0.017
- YInMn Blue #415A77 ΔE 0.025
- Twilight #4E518B ΔE 0.032
- Dusky Blue #475F94 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Denim #3B638C ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.041
Use #4F587F 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.