#555C71
Closest named color: Dusty Grape (#545775). oklch(47.7% 0.035 270.6), rgb(85, 92, 113).
Aa
White text reads best on this color (6.65:1).
About this color
#555C71 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.035 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.018 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #555C71 |
| RGB | rgb(85, 92, 113) |
| HSL | hsl(225, 14%, 39%) |
| OKLCH | oklch(47.7% 0.035 270.6) |
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 #555C71 | 6.65:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #555C71 | 3.15:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #555C71 text on white | 6.65:1 | AA | Lc 82.9 | Fine for body text |
| #555C71 text on black | 3.15:1 | AA large text | Lc -19.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BCC0CC
oklch(80.8% 0.017 271.2)
-
Step 400
400
#9AA0B2
oklch(70.7% 0.027 271)
-
Step 500
500
#81899F
oklch(63.1% 0.034 269.6)
-
Step 600
600
#6B738A
oklch(55.7% 0.037 270.1)
-
Step 700
700 (this color)
#555C71
oklch(47.7% 0.035 270.6)
-
Step 800
800
#494E5F
oklch(42.6% 0.029 272.3)
-
Step 900
900
#3D414E
oklch(37.7% 0.023 271.8)
-
Step 950
950
#24262E
oklch(27% 0.015 274.3)
#555C71 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) | #565E72 | 0.006 |
| Deuteranopia (no green cones) | #545B70 | 0.004 |
| Tritanopia (no blue cones) | #4E6063 | 0.032 |
| Achromatopsia (no color) | #5C5C5C | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555C71
#555C71
oklch(47.7% 0.035 270.6)
- #645C46
#645C46
oklch(47.6% 0.035 90.4)
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 #555C71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.018
- Slate #516572 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.031
- Dusk #4E5481 ΔE 0.042
- Denim #3B638C ΔE 0.050
- Dim Gray #696969 ΔE 0.056
- Dusky Blue #475F94 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.061
Use #555C71 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.