#55658B
Closest named color: Dusky Blue (#475F94). oklch(50.9% 0.064 266.6), rgb(85, 101, 139).
Aa
White text reads best on this color (5.80:1).
About this color
#55658B is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.064 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.032 away. White text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.62:1 |
| White text | 5.80:1 |
Values
| HEX | #55658B |
| RGB | rgb(85, 101, 139) |
| HSL | hsl(222, 24%, 44%) |
| OKLCH | oklch(50.9% 0.064 266.6) |
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 #55658B | 5.80:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #55658B | 3.62:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #55658B text on white | 5.80:1 | AA | Lc 79.0 | Fine for body text |
| #55658B text on black | 3.62:1 | AA large text | Lc -22.8 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B7C1D5
oklch(80.9% 0.03 264.4)
-
Step 400
400
#92A0C0
oklch(70.6% 0.05 266.5)
-
Step 500
500
#7889B0
oklch(63.1% 0.062 266.3)
-
Step 600
600
#61729C
oklch(55.5% 0.069 267.2)
-
Step 700
700 (this color)
#55658B
oklch(50.9% 0.064 266.6)
-
Step 800
800
#424E6C
oklch(42.6% 0.052 267.4)
-
Step 900
900
#374158
oklch(37.6% 0.042 266.2)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#55658B 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) | #58688D | 0.010 |
| Deuteranopia (no green cones) | #53638A | 0.007 |
| Tritanopia (no blue cones) | #446D72 | 0.058 |
| Achromatopsia (no color) | #656565 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55658B
#55658B
oklch(50.9% 0.064 266.6)
- #766439
#766439
oklch(51% 0.065 87.4)
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 #55658B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.032
- Denim #3B638C ΔE 0.033
- Metallic Blue #4F738E ΔE 0.040
- Slate #516572 ΔE 0.042
- Muted Blue #3B719F ΔE 0.046
- Dull Blue #49759C ΔE 0.047
- Dusty Grape #545775 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.050
Use #55658B 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.