#555191
Closest named color: Twilight (#4E518B). oklch(46.9% 0.102 284.6), rgb(85, 81, 145).
Aa
White text reads best on this color (7.06:1).
About this color
#555191 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.102 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.015 away. White text reads best on it, at 7.06:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #555191 |
| RGB | rgb(85, 81, 145) |
| HSL | hsl(244, 28%, 44%) |
| OKLCH | oklch(46.9% 0.102 284.6) |
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 #555191 | 7.06:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #555191 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #555191 text on white | 7.06:1 | AAA | Lc 84.4 | Fine for body text |
| #555191 text on black | 2.97:1 | Fails | Lc -17.6 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D7D7EB
oklch(88.5% 0.027 285.8)
-
Step 300
300
#BCBDE0
oklch(80.9% 0.049 284)
-
Step 400
400
#9B9AD0
oklch(70.7% 0.078 285.1)
-
Step 500
500
#8381C4
oklch(63.2% 0.1 284.5)
-
Step 600
600
#6D69B1
oklch(55.6% 0.11 284.8)
-
Step 700
700 (this color)
#555191
oklch(46.9% 0.102 284.6)
-
Step 800
800
#4A487B
oklch(42.8% 0.083 284.1)
-
Step 900
900
#3E3C63
oklch(37.7% 0.066 285.1)
-
Step 950
950
#24233A
oklch(26.9% 0.042 285.2)
#555191 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) | #3A5A93 | 0.041 |
| Deuteranopia (no green cones) | #385790 | 0.041 |
| Tritanopia (no blue cones) | #445E6A | 0.087 |
| Achromatopsia (no color) | #585858 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555191
#555191
oklch(46.9% 0.102 284.6)
- #645D00
#645D00
oklch(47% 0.099 104.5)
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 #555191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.015
- Dusk #4E5481 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Blueberry #464196 ΔE 0.053
- Dusty Grape #545775 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.057
- Dusk Blue #26538D ΔE 0.059
Use #555191 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.