#4F587B
Closest named color: Dusty Grape (#545775). oklch(46.7% 0.058 272.9), rgb(79, 88, 123).
Aa
White text reads best on this color (6.96:1).
About this color
#4F587B is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.058 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.011 away. White text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.01:1 |
| White text | 6.96:1 |
Values
| HEX | #4F587B |
| RGB | rgb(79, 88, 123) |
| HSL | hsl(228, 22%, 40%) |
| OKLCH | oklch(46.7% 0.058 272.9) |
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 #4F587B | 6.96:1 | AA | Lc -89.1 | Fine for body text |
| Black text on #4F587B | 3.01:1 | AA large text | Lc 19.9 | Dividers and decoration only |
| #4F587B text on white | 6.96:1 | AA | Lc 84.1 | Fine for body text |
| #4F587B text on black | 3.01:1 | AA large text | Lc -17.9 | 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
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D3
oklch(80.9% 0.028 271.8)
-
Step 400
400
#979FBD
oklch(70.6% 0.045 273.5)
-
Step 500
500
#7E88AD
oklch(63.2% 0.057 272.9)
-
Step 600
600
#677198
oklch(55.6% 0.062 273.1)
-
Step 700
700 (this color)
#4F587B
oklch(46.7% 0.058 272.9)
-
Step 800
800
#464D6A
oklch(42.6% 0.049 273.7)
-
Step 900
900
#3B4056
oklch(37.6% 0.038 274.5)
-
Step 950
950
#222632
oklch(27% 0.023 270.4)
#4F587B 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) | #4D5B7D | 0.009 |
| Deuteranopia (no green cones) | #4A587A | 0.007 |
| Tritanopia (no blue cones) | #425F64 | 0.053 |
| Achromatopsia (no color) | #595959 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F587B
#4F587B
oklch(46.7% 0.058 272.9)
- #655933
#655933
oklch(46.6% 0.057 92.5)
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 #4F587B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.011
- Dusk #4E5481 ΔE 0.018
- YInMn Blue #415A77 ΔE 0.021
- Twilight #4E518B ΔE 0.037
- Denim #3B638C ΔE 0.041
- Dusky Blue #475F94 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.043
Use #4F587B 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.