#5556AC
Closest named color: Iris (#6258C4). oklch(49.7% 0.134 279.8), rgb(85, 86, 172).
Aa
White text reads best on this color (6.33:1).
About this color
#5556AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.134 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #5556AC |
| RGB | rgb(85, 86, 172) |
| HSL | hsl(239, 34%, 50%) |
| OKLCH | oklch(49.7% 0.134 279.8) |
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 #5556AC | 6.33:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #5556AC | 3.31:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #5556AC text on white | 6.33:1 | AA | Lc 81.3 | Fine for body text |
| #5556AC text on black | 3.31:1 | AA large text | Lc -20.5 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B8BDEB
oklch(81% 0.065 280)
-
Step 400
400
#9499E0
oklch(70.7% 0.104 280.3)
-
Step 500
500
#7A7FD8
oklch(63.2% 0.133 279.4)
-
Step 600
600
#6466C5
oklch(55.5% 0.144 279.7)
-
Step 700
700 (this color)
#5556AC
oklch(49.7% 0.134 279.8)
-
Step 800
800
#44458A
oklch(42.6% 0.112 279.9)
-
Step 900
900
#393B6E
oklch(37.7% 0.086 279.7)
-
Step 950
950
#212341
oklch(27% 0.055 279.1)
#5556AC 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) | #2E63AF | 0.052 |
| Deuteranopia (no green cones) | #265CAA | 0.053 |
| Tritanopia (no blue cones) | #336979 | 0.117 |
| Achromatopsia (no color) | #5F5F5F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5556AC
#5556AC
oklch(49.7% 0.134 279.8)
- #706300
#706300
oklch(49.7% 0.103 100.4)
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 #5556AC, closest first.
No curated palette has a color within ΔE 0.04 of #5556AC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.053
- Twilight #4E518B ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.058
- French Blue #436BAD ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.062
- Mid Blue #276AB3 ΔE 0.066
- Dark Periwinkle #665FD1 ΔE 0.066
Use #5556AC 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.