#5B6879
Closest named color: Slate (#516572). oklch(51.3% 0.031 255.2), rgb(91, 104, 121).
Aa
White text reads best on this color (5.67:1).
About this color
#5B6879 is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.031 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.020 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #5B6879 |
| RGB | rgb(91, 104, 121) |
| HSL | hsl(214, 14%, 42%) |
| OKLCH | oklch(51.3% 0.031 255.2) |
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 #5B6879 | 5.67:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #5B6879 | 3.70:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #5B6879 text on white | 5.67:1 | AA | Lc 78.4 | Fine for body text |
| #5B6879 text on black | 3.70:1 | AA large text | Lc -23.4 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9DF
oklch(88.4% 0.009 258.3)
-
Step 300
300
#BAC1CB
oklch(80.8% 0.016 257.2)
-
Step 400
400
#97A2B0
oklch(70.8% 0.024 254.4)
-
Step 500
500
#7D8B9C
oklch(63.1% 0.03 253.3)
-
Step 600
600
#667587
oklch(55.7% 0.033 253.1)
-
Step 700
700 (this color)
#5B6879
oklch(51.3% 0.031 255.2)
-
Step 800
800
#46505D
oklch(42.7% 0.025 255.1)
-
Step 900
900
#3B424C
oklch(37.7% 0.02 257.3)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#5B6879 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) | #62687A | 0.010 |
| Deuteranopia (no green cones) | #5F6579 | 0.010 |
| Tritanopia (no blue cones) | #536C6D | 0.029 |
| Achromatopsia (no color) | #676767 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6879
#5B6879
oklch(51.3% 0.031 255.2)
- #726553
#726553
oklch(51.4% 0.032 75.9)
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 #5B6879, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.020
- Dim Gray #696969 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.040
- Battleship Gray #6C757D ΔE 0.047
- Dusty Grape #545775 ΔE 0.052
- Denim #3B638C ΔE 0.055
- YInMn Blue #415A77 ΔE 0.058
- Dull Blue #49759C ΔE 0.059
Use #5B6879 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.