#556380
Closest named color: Slate (#516572). oklch(49.9% 0.05 264.6), rgb(85, 99, 128).
Aa
White text reads best on this color (6.02:1).
About this color
#556380 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.050 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #556380 |
| RGB | rgb(85, 99, 128) |
| HSL | hsl(220, 20%, 42%) |
| OKLCH | oklch(49.9% 0.05 264.6) |
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 #556380 | 6.02:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #556380 | 3.48:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #556380 text on white | 6.02:1 | AA | Lc 80.1 | Fine for body text |
| #556380 text on black | 3.48:1 | AA large text | Lc -21.7 | 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
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
Step 400
400
#95A1B9
oklch(70.8% 0.038 264.3)
-
Step 500
500
#7B8AA8
oklch(63.2% 0.049 264.1)
-
Step 600
600
#647393
oklch(55.6% 0.053 265.1)
-
Step 700
700 (this color)
#556380
oklch(49.9% 0.05 264.6)
-
Step 800
800
#444F66
oklch(42.7% 0.041 264.8)
-
Step 900
900
#394253
oklch(37.8% 0.032 263)
-
Step 950
950
#212631
oklch(26.9% 0.022 265.8)
#556380 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) | #596581 | 0.009 |
| Deuteranopia (no green cones) | #55617F | 0.006 |
| Tritanopia (no blue cones) | #49696D | 0.044 |
| Achromatopsia (no color) | #636363 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556380
#556380
oklch(49.9% 0.05 264.6)
- #706142
#706142
oklch(49.9% 0.049 84.9)
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 #556380, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- Dusty Grape #545775 ΔE 0.036
- Denim #3B638C ΔE 0.036
- Dusky Blue #475F94 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Dim Gray #696969 ΔE 0.054
Use #556380 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.