#55658F
Closest named color: Dusky Blue (#475F94). oklch(51.1% 0.07 267.9), rgb(85, 101, 143).
Aa
White text reads best on this color (5.76:1).
About this color
#55658F is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.070 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.029 away. White text reads best on it, at 5.76:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #55658F |
| RGB | rgb(85, 101, 143) |
| HSL | hsl(223, 25%, 45%) |
| OKLCH | oklch(51.1% 0.07 267.9) |
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 #55658F | 5.76:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #55658F | 3.64:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #55658F text on white | 5.76:1 | AA | Lc 78.8 | Fine for body text |
| #55658F text on black | 3.64:1 | AA large text | Lc -23.0 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B7C0D7
oklch(80.8% 0.034 268.6)
-
Step 400
400
#92A0C3
oklch(70.7% 0.054 267.9)
-
Step 500
500
#7788B4
oklch(63% 0.07 268)
-
Step 600
600
#6072A0
oklch(55.6% 0.075 267.5)
-
Step 700
700 (this color)
#55658F
oklch(51.1% 0.07 267.9)
-
Step 800
800
#414E6F
oklch(42.7% 0.058 267.4)
-
Step 900
900
#37415A
oklch(37.7% 0.045 267.4)
-
Step 950
950
#202635
oklch(27% 0.029 267.5)
#55658F 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) | #576991 | 0.012 |
| Deuteranopia (no green cones) | #51638E | 0.008 |
| Tritanopia (no blue cones) | #426E74 | 0.063 |
| Achromatopsia (no color) | #666666 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55658F
#55658F
oklch(51.1% 0.07 267.9)
- #776435
#776435
oklch(51.1% 0.069 87.9)
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 #55658F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.029
- Denim #3B638C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.042
- Muted Blue #3B719F ΔE 0.043
- Dull Blue #49759C ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.048
- Slate #516572 ΔE 0.048
- French Blue #436BAD ΔE 0.049
Use #55658F 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.