#556090
Closest named color: Dusky Blue (#475F94). oklch(50.1% 0.078 273.4), rgb(85, 96, 144).
Aa
White text reads best on this color (6.06:1).
About this color
#556090 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.078 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.020 away. White text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #556090 |
| RGB | rgb(85, 96, 144) |
| HSL | hsl(229, 26%, 45%) |
| OKLCH | oklch(50.1% 0.078 273.4) |
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 #556090 | 6.06:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #556090 | 3.46:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #556090 text on white | 6.06:1 | AA | Lc 80.2 | Fine for body text |
| #556090 text on black | 3.46:1 | AA large text | Lc -21.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D4D8E7
oklch(88.4% 0.021 274)
-
Step 300
300
#B8BFDA
oklch(80.8% 0.039 274)
-
Step 400
400
#949FC7
oklch(70.8% 0.06 272.8)
-
Step 500
500
#7A86B9
oklch(63% 0.078 273.8)
-
Step 600
600
#6370A5
oklch(55.7% 0.084 272.9)
-
Step 700
700 (this color)
#556090
oklch(50.1% 0.078 273.4)
-
Step 800
800
#434C72
oklch(42.6% 0.064 273.2)
-
Step 900
900
#39405C
oklch(37.8% 0.049 273.1)
-
Step 950
950
#212536
oklch(26.9% 0.032 273.8)
#556090 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) | #506592 | 0.015 |
| Deuteranopia (no green cones) | #4B608F | 0.014 |
| Tritanopia (no blue cones) | #426A71 | 0.071 |
| Achromatopsia (no color) | #626262 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556090
#556090
oklch(50.1% 0.078 273.4)
- #72622A
#72622A
oklch(49.9% 0.078 93.5)
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 #556090, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.020
- Denim #3B638C ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.039
- Dusk #4E5481 ΔE 0.041
- Twilight #4E518B ΔE 0.045
- Dusty Grape #545775 ΔE 0.046
- French Blue #436BAD ΔE 0.051
- YInMn Blue #415A77 ΔE 0.052
Use #556090 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.