#5B6773
Closest named color: Slate (#516572). oklch(50.8% 0.024 248.3), rgb(91, 103, 115).
Aa
White text reads best on this color (5.78:1).
About this color
#5B6773 is a medium-dark close to neutral grey. In OKLCH its lightness is 51%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.016 away. White text reads best on it, at 5.78:1.
| Hue family | Neutrals |
| Lightness | medium-dark (51%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #5B6773 |
| RGB | rgb(91, 103, 115) |
| HSL | hsl(210, 12%, 40%) |
| OKLCH | oklch(50.8% 0.024 248.3) |
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 #5B6773 | 5.78:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #5B6773 | 3.63:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #5B6773 text on white | 5.78:1 | AA | Lc 78.9 | Fine for body text |
| #5B6773 text on black | 3.63:1 | AA large text | Lc -22.9 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6D9DD
oklch(88.4% 0.006 255.5)
-
Step 300
300
#BBC1C8
oklch(80.8% 0.012 252.1)
-
Step 400
400
#98A2AC
oklch(70.7% 0.019 248.1)
-
Step 500
500
#7F8B98
oklch(63.1% 0.024 250.3)
-
Step 600
600
#687582
oklch(55.6% 0.026 248.3)
-
Step 700
700 (this color)
#5B6773
oklch(50.8% 0.024 248.3)
-
Step 800
800
#47505A
oklch(42.7% 0.02 251.1)
-
Step 900
900
#3B424A
oklch(37.6% 0.017 251.8)
-
Step 950
950
#23272B
oklch(27% 0.009 248.2)
#5B6773 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) | #636774 | 0.012 |
| Deuteranopia (no green cones) | #606473 | 0.011 |
| Tritanopia (no blue cones) | #556A6B | 0.020 |
| Achromatopsia (no color) | #666666 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6773
#5B6773
oklch(50.8% 0.024 248.3)
- #6F6357
#6F6357
oklch(50.7% 0.024 67.2)
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 #5B6773, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.016
- Dim Gray #696969 ΔE 0.027
- Metallic Blue #4F738E ΔE 0.047
- Battleship Gray #6C757D ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.058
- Denim #3B638C ΔE 0.059
- Dull Blue #49759C ΔE 0.067
Use #5B6773 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.