#5553CD
Closest named color: Warm Blue (#4B57DB). oklch(51.5% 0.184 278.5), rgb(85, 83, 205).
Aa
White text reads best on this color (5.99:1).
About this color
#5553CD is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.184 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #5553CD |
| RGB | rgb(85, 83, 205) |
| HSL | hsl(241, 55%, 56%) |
| OKLCH | oklch(51.5% 0.184 278.5) |
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 #5553CD | 5.99:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #5553CD | 3.50:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #5553CD text on white | 5.99:1 | AA | Lc 79.5 | Fine for body text |
| #5553CD text on black | 3.50:1 | AA large text | Lc -22.3 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BBFA
oklch(80.8% 0.089 278.6)
-
Step 400
400
#8E96F7
oklch(70.8% 0.141 278.6)
-
Step 500
500
#7478F4
oklch(63.1% 0.182 278.4)
-
Step 600
600
#5F5DE3
oklch(55.7% 0.198 278.5)
-
Step 700
700 (this color)
#5553CD
oklch(51.5% 0.184 278.5)
-
Step 800
800
#403F9F
oklch(42.7% 0.152 278.3)
-
Step 900
900
#36377E
oklch(37.8% 0.117 278.6)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#5553CD 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) | #0068D1 | 0.073 |
| Deuteranopia (no green cones) | #005ECB | 0.067 |
| Tritanopia (no blue cones) | #007088 | 0.158 |
| Achromatopsia (no color) | #636363 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5553CD
#5553CD
oklch(51.5% 0.184 278.5)
- #786700
#786700
oklch(51.5% 0.106 97.8)
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 #5553CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Iris #6258C4 ΔE 0.028
- Slate Blue #6A5ACD ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.041
- Bluey Purple #6241C7 ΔE 0.042
- Light Indigo #6D5ACF ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Blurple #5539CC ΔE 0.053
Use #5553CD 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.