#3550CA
Closest named color: Blue Blue (#2242C7). oklch(48.8% 0.191 268.6), rgb(53, 80, 202).
Aa
White text reads best on this color (6.66:1).
About this color
#3550CA is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.191 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.040 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #3550CA |
| RGB | rgb(53, 80, 202) |
| HSL | hsl(229, 58%, 50%) |
| OKLCH | oklch(48.8% 0.191 268.6) |
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 #3550CA | 6.66:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #3550CA | 3.15:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #3550CA text on white | 6.66:1 | AA | Lc 82.3 | Fine for body text |
| #3550CA text on black | 3.15:1 | AA large text | Lc -19.6 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FC
oklch(88.6% 0.051 268.1)
-
Step 300
300
#A8BFFD
oklch(81% 0.092 268.6)
-
Step 400
400
#7A9BFD
oklch(70.8% 0.148 268.4)
-
Step 500
500
#5B7EFA
oklch(63.1% 0.189 268.7)
-
Step 600
600
#4363E9
oklch(55.5% 0.205 268.6)
-
Step 700
700 (this color)
#3550CA
oklch(48.8% 0.191 268.6)
-
Step 800
800
#2C43A4
oklch(42.6% 0.159 268.6)
-
Step 900
900
#273A82
oklch(37.7% 0.123 268.7)
-
Step 950
950
#17234C
oklch(27.1% 0.077 268.6)
#3550CA 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) | #0063CE | 0.048 |
| Deuteranopia (no green cones) | #0055C8 | 0.031 |
| Tritanopia (no blue cones) | #006F85 | 0.152 |
| Achromatopsia (no color) | #5C5C5C | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3550CA
#3550CA
oklch(48.8% 0.191 268.6)
- #775C00
#775C00
oklch(48.9% 0.1 88.7)
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 #3550CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.043
- Majorelle Blue #3F37C9 ΔE 0.051
- Blue With A Hint Of Purple #533CC6 ΔE 0.053
- Blurple #5539CC ΔE 0.058
- Azul #1D5DEC ΔE 0.060
- Iris #6258C4 ΔE 0.067
- Bluey Purple #6241C7 ΔE 0.067
Use #3550CA 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.