#5563BC
Closest named color: Iris (#6258C4). oklch(53.3% 0.139 274), rgb(85, 99, 188).
Aa
White text reads best on this color (5.38:1).
About this color
#5563BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.139 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.035 away. White text reads best on it, at 5.38:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #5563BC |
| RGB | rgb(85, 99, 188) |
| HSL | hsl(232, 43%, 54%) |
| OKLCH | oklch(53.3% 0.139 274) |
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 #5563BC | 5.38:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #5563BC | 3.89:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #5563BC text on white | 5.38:1 | AA | Lc 76.6 | Fine for body text |
| #5563BC text on black | 3.89:1 | AA large text | Lc -25.1 | 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 600.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEEA
oklch(80.9% 0.063 274.9)
-
Step 400
400
#8D9CDF
oklch(70.7% 0.1 273.9)
-
Step 500
500
#7282D6
oklch(63.1% 0.128 274)
-
Step 600
600 (this color)
#5563BC
oklch(53.3% 0.139 274)
-
Step 700
700
#4B58A9
oklch(49.1% 0.129 273.8)
-
Step 800
800
#3E4889
oklch(42.7% 0.108 274.4)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#5563BC 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) | #3A6FBF | 0.039 |
| Deuteranopia (no green cones) | #2D66BA | 0.042 |
| Tritanopia (no blue cones) | #207786 | 0.124 |
| Achromatopsia (no color) | #6A6A6A | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5563BC
#5563BC
oklch(53.3% 0.139 274)
- #826B00
#826B00
oklch(53.4% 0.11 94)
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 #5563BC, closest first.
No curated palette has a color within ΔE 0.04 of #5563BC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.035
- French Blue #436BAD ΔE 0.040
- Dark Periwinkle #665FD1 ΔE 0.042
- Slate Blue #6A5ACD ΔE 0.046
- Mid Blue #276AB3 ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.051
- Windows Blue #3778BF ΔE 0.060
- Royal Blue #4169E1 ΔE 0.060
Use #5563BC 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.