#4B728F
Closest named color: Metallic Blue (#4F738E). oklch(53.5% 0.063 241.6), rgb(75, 114, 143).
Aa
White text reads best on this color (5.11:1).
About this color
#4B728F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.063 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.006 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #4B728F |
| RGB | rgb(75, 114, 143) |
| HSL | hsl(206, 31%, 43%) |
| OKLCH | oklch(53.5% 0.063 241.6) |
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 #4B728F | 5.11:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #4B728F | 4.10:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #4B728F text on white | 5.11:1 | AA | Lc 75.2 | Fine for body text |
| #4B728F text on black | 4.10:1 | AA large text | Lc -26.5 | 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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#88A5BB
oklch(70.8% 0.046 241)
-
Step 500
500
#6A8EAA
oklch(63% 0.058 242.2)
-
Step 600
600 (this color)
#4B728F
oklch(53.5% 0.063 241.6)
-
Step 700
700
#41657F
oklch(49% 0.059 240.9)
-
Step 800
800
#365268
oklch(42.6% 0.05 243)
-
Step 900
900
#2F4454
oklch(37.6% 0.038 241.8)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#4B728F 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) | #667290 | 0.035 |
| Deuteranopia (no green cones) | #5C6B8E | 0.027 |
| Tritanopia (no blue cones) | #2D797C | 0.051 |
| Achromatopsia (no color) | #6E6E6E | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B728F
#4B728F
oklch(53.5% 0.063 241.6)
- #886546
#886546
oklch(53.5% 0.064 62.3)
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 #4B728F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.006
- Dull Blue #49759C ΔE 0.020
- Cerulean #457B9D ΔE 0.029
- Muted Blue #3B719F ΔE 0.030
- Stormy Blue #507B9C ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.041
- Sea Blue #047495 ΔE 0.044
- Ocean #017B92 ΔE 0.046
Use #4B728F 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.