#555E8D
Closest named color: Dusky Blue (#475F94). oklch(49.5% 0.076 275), rgb(85, 94, 141).
Aa
White text reads best on this color (6.22:1).
About this color
#555E8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.076 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.021 away. White text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #555E8D |
| RGB | rgb(85, 94, 141) |
| HSL | hsl(230, 25%, 44%) |
| OKLCH | oklch(49.5% 0.076 275) |
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 #555E8D | 6.22:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #555E8D | 3.37:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #555E8D text on white | 6.22:1 | AA | Lc 81.0 | Fine for body text |
| #555E8D text on black | 3.37:1 | AA large text | Lc -20.9 | 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
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD9
oklch(80.8% 0.037 275.2)
-
Step 400
400
#959EC6
oklch(70.6% 0.059 274.9)
-
Step 500
500
#7C86B7
oklch(63.1% 0.075 275.2)
-
Step 600
600
#656FA3
oklch(55.5% 0.082 275.1)
-
Step 700
700 (this color)
#555E8D
oklch(49.5% 0.076 275)
-
Step 800
800
#454C72
oklch(42.7% 0.064 275.4)
-
Step 900
900
#3A405C
oklch(37.8% 0.049 274.5)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#555E8D 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) | #4E638F | 0.016 |
| Deuteranopia (no green cones) | #4A5F8C | 0.015 |
| Tritanopia (no blue cones) | #44676F | 0.067 |
| Achromatopsia (no color) | #616161 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555E8D
#555E8D
oklch(49.5% 0.076 275)
- #6F612A
#6F612A
oklch(49.4% 0.076 95.2)
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 #555E8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.021
- Denim #3B638C ΔE 0.034
- Dusk #4E5481 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.037
- Twilight #4E518B ΔE 0.040
- Dusty Grape #545775 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.051
Use #555E8D 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.