#556384
Closest named color: Slate (#516572). oklch(50.1% 0.056 266.6), rgb(85, 99, 132).
Aa
White text reads best on this color (5.99:1).
About this color
#556384 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.056 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.033 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #556384 |
| RGB | rgb(85, 99, 132) |
| HSL | hsl(222, 22%, 43%) |
| OKLCH | oklch(50.1% 0.056 266.6) |
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 #556384 | 5.99:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #556384 | 3.50:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #556384 text on white | 5.99:1 | AA | Lc 79.9 | Fine for body text |
| #556384 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B9C1D3
oklch(81% 0.027 266.6)
-
Step 400
400
#94A0BC
oklch(70.6% 0.043 267)
-
Step 500
500
#7A89AC
oklch(63.1% 0.056 266.7)
-
Step 600
600
#637397
oklch(55.7% 0.059 265.9)
-
Step 700
700 (this color)
#556384
oklch(50.1% 0.056 266.6)
-
Step 800
800
#434E69
oklch(42.6% 0.047 267.2)
-
Step 900
900
#394155
oklch(37.6% 0.036 267.7)
-
Step 950
950
#212632
oklch(26.9% 0.024 267.1)
#556384 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) | #586585 | 0.008 |
| Deuteranopia (no green cones) | #546183 | 0.006 |
| Tritanopia (no blue cones) | #476A6E | 0.051 |
| Achromatopsia (no color) | #636363 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556384
#556384
oklch(50.1% 0.056 266.6)
- #72623E
#72623E
oklch(50.3% 0.056 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 #556384, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.033
- Denim #3B638C ΔE 0.034
- Dusky Blue #475F94 ΔE 0.036
- Dusty Grape #545775 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.045
- Dusk #4E5481 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.051
Use #556384 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.