#55647D
Closest named color: Slate (#516572). oklch(50% 0.044 260.6), rgb(85, 100, 125).
Aa
White text reads best on this color (5.99:1).
About this color
#55647D is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.044 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.020 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #55647D |
| RGB | rgb(85, 100, 125) |
| HSL | hsl(218, 19%, 41%) |
| OKLCH | oklch(50% 0.044 260.6) |
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 #55647D | 5.99:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #55647D | 3.50:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #55647D text on white | 5.99:1 | AA | Lc 79.9 | Fine for body text |
| #55647D text on black | 3.50:1 | AA large text | Lc -21.9 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#B9C1CF
oklch(80.9% 0.022 261.8)
-
Step 400
400
#95A1B6
oklch(70.6% 0.034 261.7)
-
Step 500
500
#7A8AA4
oklch(63% 0.043 260.1)
-
Step 600
600
#637490
oklch(55.6% 0.048 260.3)
-
Step 700
700 (this color)
#55647D
oklch(50% 0.044 260.6)
-
Step 800
800
#444F63
oklch(42.6% 0.036 262.3)
-
Step 900
900
#394251
oklch(37.7% 0.028 260.6)
-
Step 950
950
#21272F
oklch(27% 0.017 255.7)
#55647D 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) | #5C657E | 0.011 |
| Deuteranopia (no green cones) | #57627C | 0.006 |
| Tritanopia (no blue cones) | #4A696C | 0.039 |
| Achromatopsia (no color) | #636363 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55647D
#55647D
oklch(50% 0.044 260.6)
- #716147
#716147
oklch(50.1% 0.044 79.6)
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 #55647D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.020
- Dusty Grape #545775 ΔE 0.038
- Denim #3B638C ΔE 0.039
- YInMn Blue #415A77 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.045
- Dusky Blue #475F94 ΔE 0.047
- Dim Gray #696969 ΔE 0.049
- Dusk #4E5481 ΔE 0.052
Use #55647D 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.