#55688D
Closest named color: Metallic Blue (#4F738E). oklch(51.7% 0.063 263.3), rgb(85, 104, 141).
Aa
White text reads best on this color (5.59:1).
About this color
#55688D is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.063 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.032 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #55688D |
| RGB | rgb(85, 104, 141) |
| HSL | hsl(220, 25%, 44%) |
| OKLCH | oklch(51.7% 0.063 263.3) |
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 #55688D | 5.59:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #55688D | 3.75:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #55688D text on white | 5.59:1 | AA | Lc 78.0 | Fine for body text |
| #55688D text on black | 3.75:1 | AA large text | Lc -23.8 | 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
#D3D9E5
oklch(88.4% 0.018 264.5)
-
Step 300
300
#B6C1D5
oklch(80.9% 0.031 262.5)
-
Step 400
400
#91A1C0
oklch(70.7% 0.049 263.6)
-
Step 500
500
#768AB0
oklch(63.2% 0.062 263)
-
Step 600
600
#5E739C
oklch(55.5% 0.069 263.3)
-
Step 700
700 (this color)
#55688D
oklch(51.7% 0.063 263.3)
-
Step 800
800
#404F6C
oklch(42.7% 0.052 263.2)
-
Step 900
900
#364258
oklch(37.8% 0.041 262.3)
-
Step 950
950
#202633
oklch(26.9% 0.026 265.4)
#55688D 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) | #5B6B8F | 0.013 |
| Deuteranopia (no green cones) | #55658C | 0.009 |
| Tritanopia (no blue cones) | #437075 | 0.057 |
| Achromatopsia (no color) | #686868 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55688D
#55688D
oklch(51.7% 0.063 263.3)
- #7A653C
#7A653C
oklch(51.7% 0.064 83.2)
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 #55688D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.032
- Denim #3B638C ΔE 0.037
- Dusky Blue #475F94 ΔE 0.038
- Dull Blue #49759C ΔE 0.039
- Muted Blue #3B719F ΔE 0.040
- Slate #516572 ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.050
- French Blue #436BAD ΔE 0.052
Use #55688D 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.