#55589E
Closest named color: Dusky Blue (#475F94). oklch(49.1% 0.111 279.6), rgb(85, 88, 158).
Aa
White text reads best on this color (6.41:1).
About this color
#55589E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.111 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.033 away. White text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #55589E |
| RGB | rgb(85, 88, 158) |
| HSL | hsl(238, 30%, 48%) |
| OKLCH | oklch(49.1% 0.111 279.6) |
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 #55589E | 6.41:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #55589E | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #55589E text on white | 6.41:1 | AA | Lc 81.7 | Fine for body text |
| #55589E text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#B9BEE3
oklch(81% 0.052 279.1)
-
Step 400
400
#959BD6
oklch(70.7% 0.086 279.4)
-
Step 500
500
#7C81CA
oklch(63% 0.109 279.8)
-
Step 600
600
#666AB7
oklch(55.6% 0.118 279.6)
-
Step 700
700 (this color)
#55589E
oklch(49.1% 0.111 279.6)
-
Step 800
800
#454880
oklch(42.7% 0.092 279.4)
-
Step 900
900
#3A3D67
oklch(37.8% 0.071 279.3)
-
Step 950
950
#22243C
oklch(27.1% 0.045 279.3)
#55589E 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) | #3D62A1 | 0.038 |
| Deuteranopia (no green cones) | #385C9C | 0.038 |
| Tritanopia (no blue cones) | #3C6673 | 0.096 |
| Achromatopsia (no color) | #5F5F5F | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55589E
#55589E
oklch(49.1% 0.111 279.6)
- #6F6100
#6F6100
oklch(49.1% 0.102 99.4)
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 #55589E, closest first.
No curated palette has a color within ΔE 0.04 of #55589E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.033
- Twilight #4E518B ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.041
- Dusk #4E5481 ΔE 0.048
- French Blue #436BAD ΔE 0.055
- Denim #3B638C ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.062
- Iris #6258C4 ΔE 0.064
Use #55589E 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.