#4B657F
Closest named color: Slate (#516572). oklch(49.7% 0.052 248.9), rgb(75, 101, 127).
Aa
White text reads best on this color (6.05:1).
About this color
#4B657F is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.052 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.022 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #4B657F |
| RGB | rgb(75, 101, 127) |
| HSL | hsl(210, 26%, 40%) |
| OKLCH | oklch(49.7% 0.052 248.9) |
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 #4B657F | 6.05:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #4B657F | 3.46:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #4B657F text on white | 6.05:1 | AA | Lc 80.2 | Fine for body text |
| #4B657F text on black | 3.46:1 | AA large text | Lc -21.6 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B5C2D1
oklch(80.9% 0.026 251.9)
-
Step 400
400
#8EA3B9
oklch(70.7% 0.04 249.6)
-
Step 500
500
#728DA8
oklch(63.2% 0.051 248.6)
-
Step 600
600
#5A7693
oklch(55.5% 0.056 249.7)
-
Step 700
700 (this color)
#4B657F
oklch(49.7% 0.052 248.9)
-
Step 800
800
#3C5166
oklch(42.6% 0.044 248.9)
-
Step 900
900
#344353
oklch(37.7% 0.034 250.4)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#4B657F 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) | #5B6580 | 0.022 |
| Deuteranopia (no green cones) | #54607E | 0.018 |
| Tritanopia (no blue cones) | #396B6E | 0.044 |
| Achromatopsia (no color) | #626262 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B657F
#4B657F
oklch(49.7% 0.052 248.9)
- #765D42
#765D42
oklch(49.7% 0.052 68.3)
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 #4B657F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.022
- Denim #3B638C ΔE 0.029
- YInMn Blue #415A77 ΔE 0.037
- Dusty Grape #545775 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.044
- Dusk #4E5481 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
Use #4B657F 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.