#555691
Closest named color: Twilight (#4E518B). oklch(48% 0.094 281.5), rgb(85, 86, 145).
Aa
White text reads best on this color (6.71:1).
About this color
#555691 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.094 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.020 away. White text reads best on it, at 6.71:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #555691 |
| RGB | rgb(85, 86, 145) |
| HSL | hsl(239, 26%, 45%) |
| OKLCH | oklch(48% 0.094 281.5) |
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 #555691 | 6.71:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #555691 | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #555691 text on white | 6.71:1 | AA | Lc 83.0 | Fine for body text |
| #555691 text on black | 3.12:1 | AA large text | Lc -18.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D6D8EA
oklch(88.6% 0.025 280.8)
-
Step 300
300
#BBBEDE
oklch(81% 0.045 281.1)
-
Step 400
400
#989CCE
oklch(70.8% 0.073 280.8)
-
Step 500
500
#8083C1
oklch(63.2% 0.093 281.3)
-
Step 600
600
#6A6BAD
oklch(55.6% 0.101 281.9)
-
Step 700
700 (this color)
#555691
oklch(48% 0.094 281.5)
-
Step 800
800
#484979
oklch(42.7% 0.079 281.6)
-
Step 900
900
#3C3D61
oklch(37.6% 0.061 281.8)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#555691 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) | #425E93 | 0.032 |
| Deuteranopia (no green cones) | #3E5A90 | 0.032 |
| Tritanopia (no blue cones) | #43626C | 0.083 |
| Achromatopsia (no color) | #5C5C5C | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555691
#555691
oklch(48% 0.094 281.5)
- #695F10
#695F10
oklch(48.1% 0.094 101.6)
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 #555691, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.020
- Dusk #4E5481 ΔE 0.029
- Dusky Blue #475F94 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.035
- Dusty Grape #545775 ΔE 0.047
- Denim #3B638C ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.056
Use #555691 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.