#556181
Closest named color: Dusty Grape (#545775). oklch(49.5% 0.054 268.5), rgb(85, 97, 129).
Aa
White text reads best on this color (6.15:1).
About this color
#556181 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.054 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.031 away. White text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #556181 |
| RGB | rgb(85, 97, 129) |
| HSL | hsl(224, 21%, 42%) |
| OKLCH | oklch(49.5% 0.054 268.5) |
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 #556181 | 6.15:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #556181 | 3.41:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #556181 text on white | 6.15:1 | AA | Lc 80.7 | Fine for body text |
| #556181 text on black | 3.41:1 | AA large text | Lc -21.2 | 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
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#B9C0D2
oklch(80.8% 0.026 268.8)
-
Step 400
400
#96A0BB
oklch(70.7% 0.041 269.3)
-
Step 500
500
#7C89AA
oklch(63.2% 0.052 268.1)
-
Step 600
600
#657296
oklch(55.5% 0.058 269.1)
-
Step 700
700 (this color)
#556181
oklch(49.5% 0.054 268.5)
-
Step 800
800
#454E68
oklch(42.7% 0.045 269.6)
-
Step 900
900
#3A4154
oklch(37.7% 0.034 269)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#556181 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) | #576482 | 0.010 |
| Deuteranopia (no green cones) | #536080 | 0.004 |
| Tritanopia (no blue cones) | #48676C | 0.048 |
| Achromatopsia (no color) | #616161 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556181
#556181
oklch(49.5% 0.054 268.5)
- #6E603E
#6E603E
oklch(49.4% 0.053 88)
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 #556181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.031
- Slate #516572 ΔE 0.031
- Denim #3B638C ΔE 0.034
- Dusky Blue #475F94 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.039
- Dusk #4E5481 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.050
- Metallic Blue #4F738E ΔE 0.051
Use #556181 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.