#55607B
Closest named color: Slate (#516572). oklch(49% 0.046 267.4), rgb(85, 96, 123).
Aa
White text reads best on this color (6.27:1).
About this color
#55607B is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.046 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.025 away. White text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #55607B |
| RGB | rgb(85, 96, 123) |
| HSL | hsl(223, 18%, 41%) |
| OKLCH | oklch(49% 0.046 267.4) |
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 #55607B | 6.27:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #55607B | 3.34:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #55607B text on white | 6.27:1 | AA | Lc 81.3 | Fine for body text |
| #55607B text on black | 3.34:1 | AA large text | Lc -20.6 | 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
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC0CF
oklch(80.8% 0.022 268.4)
-
Step 400
400
#97A0B7
oklch(70.6% 0.035 268.5)
-
Step 500
500
#7D89A6
oklch(63.1% 0.046 267.4)
-
Step 600
600
#677391
oklch(55.7% 0.049 267.8)
-
Step 700
700 (this color)
#55607B
oklch(49% 0.046 267.4)
-
Step 800
800
#464F64
oklch(42.8% 0.037 266.7)
-
Step 900
900
#3B4152
oklch(37.7% 0.03 269.7)
-
Step 950
950
#222630
oklch(26.9% 0.02 267.9)
#55607B 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) | #57627C | 0.007 |
| Deuteranopia (no green cones) | #545F7A | 0.004 |
| Tritanopia (no blue cones) | #4B6569 | 0.040 |
| Achromatopsia (no color) | #606060 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55607B
#55607B
oklch(49% 0.046 267.4)
- #6C5F42
#6C5F42
oklch(49% 0.046 86.5)
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 #55607B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.025
- Dusty Grape #545775 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.035
- Denim #3B638C ΔE 0.039
- Dusk #4E5481 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.045
- Dim Gray #696969 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.055
Use #55607B 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.