#4B6573
Closest named color: Slate (#516572). oklch(49.1% 0.038 232), rgb(75, 101, 115).
Aa
White text reads best on this color (6.16:1).
About this color
#4B6573 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.038 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.008 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #4B6573 |
| RGB | rgb(75, 101, 115) |
| HSL | hsl(201, 21%, 37%) |
| OKLCH | oklch(49.1% 0.038 232) |
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 #4B6573 | 6.16:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #4B6573 | 3.40:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #4B6573 text on white | 6.16:1 | AA | Lc 80.7 | Fine for body text |
| #4B6573 text on black | 3.40:1 | AA large text | Lc -21.1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B5C3CB
oklch(80.9% 0.019 232.6)
-
Step 400
400
#8FA4B0
oklch(70.6% 0.029 232.9)
-
Step 500
500
#738E9D
oklch(63.1% 0.038 232.5)
-
Step 600
600
#5B7887
oklch(55.6% 0.041 230.9)
-
Step 700
700 (this color)
#4B6573
oklch(49.1% 0.038 232)
-
Step 800
800
#3E525E
oklch(42.7% 0.032 234.8)
-
Step 900
900
#35444D
oklch(37.7% 0.025 234.6)
-
Step 950
950
#1F282D
oklch(27% 0.016 232.4)
#4B6573 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) | #5E6474 | 0.026 |
| Deuteranopia (no green cones) | #595F73 | 0.025 |
| Tritanopia (no blue cones) | #3E6969 | 0.028 |
| Achromatopsia (no color) | #616161 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6573
#4B6573
oklch(49.1% 0.038 232)
- #735B4D
#735B4D
oklch(49.1% 0.038 51.8)
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 #4B6573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.008
- YInMn Blue #415A77 ΔE 0.040
- Dusty Grape #545775 ΔE 0.044
- Denim #3B638C ΔE 0.046
- Dim Gray #696969 ΔE 0.048
- Metallic Blue #4F738E ΔE 0.053
- Dark Aqua #05696B ΔE 0.056
- Deep Turquoise #017374 ΔE 0.060
Use #4B6573 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.