#55598C
Closest named color: Dusk (#4E5481). oklch(48.3% 0.082 279.4), rgb(85, 89, 140).
Aa
White text reads best on this color (6.57:1).
About this color
#55598C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.024 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #55598C |
| RGB | rgb(85, 89, 140) |
| HSL | hsl(236, 24%, 44%) |
| OKLCH | oklch(48.3% 0.082 279.4) |
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 #55598C | 6.57:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #55598C | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #55598C text on white | 6.57:1 | AA | Lc 82.5 | Fine for body text |
| #55598C text on black | 3.19:1 | AA large text | Lc -19.4 | 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
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E8
oklch(88.5% 0.022 280.3)
-
Step 300
300
#BBBEDA
oklch(80.8% 0.039 280.6)
-
Step 400
400
#989DC8
oklch(70.7% 0.063 279.5)
-
Step 500
500
#7F84BA
oklch(63% 0.081 279.7)
-
Step 600
600
#696DA6
oklch(55.5% 0.088 280)
-
Step 700
700 (this color)
#55598C
oklch(48.3% 0.082 279.4)
-
Step 800
800
#474B74
oklch(42.8% 0.068 278.8)
-
Step 900
900
#3C3F5D
oklch(37.8% 0.051 279.2)
-
Step 950
950
#232537
oklch(27.1% 0.034 279)
#55598C 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) | #485F8E | 0.023 |
| Deuteranopia (no green cones) | #455B8B | 0.022 |
| Tritanopia (no blue cones) | #45636C | 0.072 |
| Achromatopsia (no color) | #5D5D5D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55598C
#55598C
oklch(48.3% 0.082 279.4)
- #6A5F22
#6A5F22
oklch(48.3% 0.081 99)
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 #55598C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.025
- Twilight #4E518B ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.034
- Dusty Grape #545775 ΔE 0.037
- Denim #3B638C ΔE 0.041
- YInMn Blue #415A77 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
Use #55598C 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.