#5556AB
Closest named color: Iris (#6258C4). oklch(49.6% 0.133 279.9), rgb(85, 86, 171).
Aa
White text reads best on this color (6.35:1).
About this color
#5556AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.133 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.044 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #5556AB |
| RGB | rgb(85, 86, 171) |
| HSL | hsl(239, 34%, 50%) |
| OKLCH | oklch(49.6% 0.133 279.9) |
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 #5556AB | 6.35:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #5556AB | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #5556AB text on white | 6.35:1 | AA | Lc 81.4 | Fine for body text |
| #5556AB text on black | 3.30:1 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F1
oklch(88.5% 0.036 280.4)
-
Step 300
300
#B8BDEA
oklch(81% 0.064 279.9)
-
Step 400
400
#9499E0
oklch(70.7% 0.104 280.3)
-
Step 500
500
#7B7FD7
oklch(63.2% 0.131 280)
-
Step 600
600
#6566C4
oklch(55.5% 0.143 280.2)
-
Step 700
700 (this color)
#5556AB
oklch(49.6% 0.133 279.9)
-
Step 800
800
#444689
oklch(42.7% 0.109 279.4)
-
Step 900
900
#393B6E
oklch(37.7% 0.086 279.7)
-
Step 950
950
#212340
oklch(27% 0.054 279.2)
#5556AB 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) | #2F63AE | 0.051 |
| Deuteranopia (no green cones) | #275CA9 | 0.053 |
| Tritanopia (no blue cones) | #346878 | 0.115 |
| Achromatopsia (no color) | #5F5F5F | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5556AB
#5556AB
oklch(49.6% 0.133 279.9)
- #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 #5556AB, closest first.
No curated palette has a color within ΔE 0.04 of #5556AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.051
- Twilight #4E518B ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.057
- French Blue #436BAD ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.063
- Mid Blue #276AB3 ΔE 0.066
- Blueberry #464196 ΔE 0.068
Use #5556AB 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.