#4F647F
Closest named color: Slate (#516572). oklch(49.7% 0.05 254.9), rgb(79, 100, 127).
Aa
White text reads best on this color (6.06:1).
About this color
#4F647F is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.050 and its hue 255°. 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 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #4F647F |
| RGB | rgb(79, 100, 127) |
| HSL | hsl(214, 23%, 40%) |
| OKLCH | oklch(49.7% 0.05 254.9) |
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 #4F647F | 6.06:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #4F647F | 3.46:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #4F647F text on white | 6.06:1 | AA | Lc 80.3 | Fine for body text |
| #4F647F 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B6C2D1
oklch(80.9% 0.025 254)
-
Step 400
400
#91A2B9
oklch(70.7% 0.039 256)
-
Step 500
500
#758BA8
oklch(63% 0.051 255.4)
-
Step 600
600
#5E7593
oklch(55.6% 0.054 255.2)
-
Step 700
700 (this color)
#4F647F
oklch(49.7% 0.05 254.9)
-
Step 800
800
#405066
oklch(42.7% 0.042 256.4)
-
Step 900
900
#364353
oklch(37.8% 0.032 253.8)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#4F647F 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) | #5A6580 | 0.016 |
| Deuteranopia (no green cones) | #55607E | 0.013 |
| Tritanopia (no blue cones) | #3F6A6D | 0.044 |
| Achromatopsia (no color) | #626262 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F647F
#4F647F
oklch(49.7% 0.05 254.9)
- #735E42
#735E42
oklch(49.5% 0.05 74.2)
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 #4F647F, 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 0.032
- Dusty Grape #545775 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.045
- Dusk #4E5481 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.053
Use #4F647F 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.