#556189
Closest named color: Dusky Blue (#475F94). oklch(49.9% 0.066 271), rgb(85, 97, 137).
Aa
White text reads best on this color (6.07:1).
About this color
#556189 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.066 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.027 away. White text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #556189 |
| RGB | rgb(85, 97, 137) |
| HSL | hsl(226, 23%, 44%) |
| OKLCH | oklch(49.9% 0.066 271) |
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 #556189 | 6.07:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #556189 | 3.45:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #556189 text on white | 6.07:1 | AA | Lc 80.3 | Fine for body text |
| #556189 text on black | 3.45:1 | AA large text | Lc -21.5 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#B9C0D6
oklch(80.9% 0.032 271.6)
-
Step 400
400
#959FC1
oklch(70.6% 0.051 272.2)
-
Step 500
500
#7B88B2
oklch(63.2% 0.065 271.1)
-
Step 600
600
#64719D
oklch(55.6% 0.07 271.3)
-
Step 700
700 (this color)
#556189
oklch(49.9% 0.066 271)
-
Step 800
800
#444D6D
oklch(42.6% 0.055 271.8)
-
Step 900
900
#394059
oklch(37.6% 0.044 272.1)
-
Step 950
950
#212634
oklch(27% 0.027 269.3)
#556189 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) | #54658B | 0.011 |
| Deuteranopia (no green cones) | #506088 | 0.008 |
| Tritanopia (no blue cones) | #45696F | 0.059 |
| Achromatopsia (no color) | #626262 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556189
#556189
oklch(49.9% 0.066 271)
- #716235
#716235
oklch(50% 0.066 91.5)
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 #556189, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.027
- Denim #3B638C ΔE 0.032
- Dusty Grape #545775 ΔE 0.038
- Dusk #4E5481 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.043
- Slate #516572 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Twilight #4E518B ΔE 0.050
Use #556189 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.