#5B6385
Closest named color: Slate (#516572). oklch(50.6% 0.055 274), rgb(91, 99, 133).
Aa
White text reads best on this color (5.88:1).
About this color
#5B6385 is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.055 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.037 away. White text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #5B6385 |
| RGB | rgb(91, 99, 133) |
| HSL | hsl(229, 19%, 44%) |
| OKLCH | oklch(50.6% 0.055 274) |
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 #5B6385 | 5.88:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #5B6385 | 3.56:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #5B6385 text on white | 5.88:1 | AA | Lc 79.4 | Fine for body text |
| #5B6385 text on black | 3.56:1 | AA large text | Lc -22.4 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D6D9E3
oklch(88.6% 0.014 272.7)
-
Step 300
300
#BBC0D2
oklch(80.9% 0.026 273.4)
-
Step 400
400
#989FBC
oklch(70.7% 0.043 274.6)
-
Step 500
500
#7F88AB
oklch(63.2% 0.054 273.5)
-
Step 600
600
#687196
oklch(55.5% 0.059 273.8)
-
Step 700
700 (this color)
#5B6385
oklch(50.6% 0.055 274)
-
Step 800
800
#474D68
oklch(42.6% 0.046 274.6)
-
Step 900
900
#3B4055
oklch(37.6% 0.037 274.1)
-
Step 950
950
#232632
oklch(27.1% 0.023 273.8)
#5B6385 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) | #596687 | 0.009 |
| Deuteranopia (no green cones) | #566384 | 0.007 |
| Tritanopia (no blue cones) | #50696F | 0.048 |
| Achromatopsia (no color) | #646464 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6385
#5B6385
oklch(50.6% 0.055 274)
- #6F6540
#6F6540
oklch(50.7% 0.055 94.8)
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 #5B6385, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.040
- Dusty Grape #545775 ΔE 0.041
- Denim #3B638C ΔE 0.041
- Metallic Blue #4F738E ΔE 0.046
- Dusk #4E5481 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.056
Use #5B6385 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.